23-3-2017 SAN GERARDO DE DOTA, COSTA RICA - RUFOUS COLLARED SPARROW (Zonotrichia capensis)

The Rufous-collared Sparrow, also known as the Andean Sparrow, is a small, charming bird measuring 13.5–15 cm in length and weighing between 20–25 grams. Adults are recognized by their stubby grey bills and a distinctive grey head marked with broad black stripes on the crown sides, and thinner stripes through the eye and below the cheeks. A notable rufous nape and breast sides complement their black-streaked buff-brown upperparts, and they exhibit two white wing bars. Their throats are white, transitioning to off-white underparts that become brown on the flanks, highlighted by a black breast patch. Juveniles present a more subdued appearance with duller, indistinct head patterns and streaked underparts, lacking the adult's rufous collar.

When identifying this species, look for the rufous collar around the nape and the black stripes on the head. The two white wing bars are also key features. The largest subspecies, found on the tepuis, has grey underparts and a more extensive rufous collar that appears as a band of black freckles across the breast.

The Rufous-collared Sparrow thrives in a variety of open or semi-open habitats, including cultivated lands, gardens, parks, grasslands, and scrubby second growth or cerrado. It is well-adapted to urban and suburban environments but is notably absent from dense Amazonian forests.

This adaptable bird ranges from the extreme south-east of Mexico to Tierra del Fuego, and on the island of Hispaniola in the Caribbean. In the northern and western parts of its range, it is typically found at altitudes of 600–4,000 meters, while in the southern and eastern parts, it is commonly found down to near sea level.

The Rufous-collared Sparrow is often seen in pairs or small flocks, holding small territories. It is known for its tame and approachable nature, making it a familiar sight across its extensive range.

The male's song is a delightful mix of slurred whistles and trills, varying geographically. Calls include a sharp "tsip." Listen for songs that may include tee-teeooo, e’e’e’e’e, or teeooo, teeeee, often delivered from a low perch.

Breeding is influenced by food availability and rainfall. Nests are open cups of plant material lined with fine grasses, placed in vegetation on the ground or low in a tree or bush. Females lay two or three pale greenish-blue eggs with reddish-brown blotches, which are incubated for 12–14 days. Males assist in feeding the chicks, which fledge after about two weeks. Brood parasitism by species such as the shiny cowbird may occur.

The Rufous-collared Sparrow can be confused with other sparrows, but its rufous collar and distinctive head stripes are key differentiators.

This sparrow forages on the ground for seeds, fallen grain, insects, and spiders. It may join mixed-species feeding flocks and has been observed picking termites from spider webs.

The Rufous-collared Sparrow is classified as Least Concern by the IUCN, thanks to its widespread distribution and adaptability to human-altered environments.

22-3-2017 TROGON LODGE, COSTA RICA - MOUNTAIN THRUSH (Turdus plebejus)

The Mountain Thrush, known scientifically as Turdus plebejus, is a robust member of the thrush family, Turdidae. This bird, once called the Mountain Robin, is a Central American native with a rather unassuming plumage. Adults are cloaked in a uniform dull olive-brown, with subtle white streaks gracing the throat. They measure between 23 to 26 centimeters in length and tip the scales at an average of 86 grams. The bill is a stark black, while the legs are a dark brown hue. Juveniles share a resemblance with adults but are distinguished by buff or orange streaks on their head and upperparts, and dark spotting on their underparts.

To identify the Mountain Thrush, look for its olive-brown plumage and faint white throat streaks. It can be confused with its relatives, the Sooty Thrush, which is darker with an orange bill, eye ring, and legs, and the Clay-colored Thrush, which is paler with a yellow bill.

The Mountain Thrush has a preference for tall mountain forests rich with oak, epiphytes, and mosses. It is typically found from altitudes of 1,800 meters up to the timberline.

This species is distributed across the highlands from southern Mexico to western Panama. It is known to descend in flocks to as low as 900 meters above sea level during the wet season.

The Mountain Thrush exhibits typical thrush behaviors, foraging on large branches or the ground, often in flocks outside of the breeding season. It moves in a series of hops and dashes, pausing frequently to overturn leaf litter in search of small fruits, insects, and spiders.

The breeding habits of the Mountain Thrush involve constructing a large cup nest lined with grass or rootlets, hidden amongst epiphytes on a tree branch, 3 to 12 meters off the ground. The female lays 2 to 3 unmarked greenish-blue eggs between March and June. The breeding season song is a mechanical monotone "chip chip cher chip chip cher cher," while the call is a high-pitched "seee" or "whip."

The IUCN Red List has classified the Mountain Thrush as Least Concern, indicating that, currently, there are no immediate threats to its population numbers.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - BLUE GREY TANAGER (Thraupis episcopus)

The Blue-gray Tanager, Thraupis episcopus, is a medium-sized songbird of the tanager family, Thraupidae. It presents a delightful palette of blue hues, with a light bluish head and underparts, and darker blue upperparts. A distinctive shoulder patch, varying in color among subspecies, adds to its charm. Both sexes are similar in appearance, with the immature birds showing a much duller plumage.

Adults measure between 16–18 cm in length and weigh approximately 30–40 grams. They possess a short and quite thick bill. The shoulder patch coloration is a key feature for identification, ranging from lavender to dark blue or white, depending on the subspecies.

The Blue-gray Tanager is found in open woodlands, cultivated areas, and gardens. It is a species that has adapted well to human-altered landscapes.

This species has a broad range, extending from Mexico through Central America, South America to northeast Bolivia, and northern Brazil, encompassing all of the Amazon Basin except its southernmost part. It has also been introduced to Lima, Peru, and is native to the islands of Trinidad and Tobago.

The Blue-gray Tanager is known for being a common, restless, and confiding bird, often seen in pairs or small groups. It is quite at home in human habitation and is known to partake of cultivated fruits such as papayas.

3-5-2017 CORDOBA, ANDALUCIA - EUROPEAN GOLDFINCH (MALE) (Carduelis carduelis)

The European goldfinch, or simply goldfinch (Carduelis carduelis), is a small, vibrant passerine bird belonging to the finch family. This charming avian species is adorned with a striking red face, encircled by black markings near the eyes, and a black-and-white head. The back and flanks exhibit a warm buff or chestnut brown, while the wings are black with a prominent yellow bar. The tail is black, and the rump is a contrasting white. Males and females are similar in appearance, though the male boasts a slightly more extensive red mask.

Upon closer inspection, one can discern the male goldfinch by its larger, more vivid red mask that extends just beyond the eye. The female's red face does not reach past the eye, and her shoulder feathers are brown, as opposed to the male's black. The bill is ivory-colored, long, and pointed, and the tail is forked. Juveniles can be identified by their plain heads and greyer backs, but the yellow wing stripe is a clear indicator of their species.

The European goldfinch favors open, partially wooded lowlands and is a resident in the milder western parts of its range. In colder regions, it migrates to escape the harsh weather.

3-5-2017 CORDOBA, ANDALUCIA - ROCK PIGEON (Columba livia)

The Rock Dove, commonly known as the Rock Pigeon or simply "pigeon," is a familiar bird that graces our cityscapes with its presence. This bird, with its robust body, rounded head, and stout bill, is a member of the Columbidae family. The wild form of the pigeon, Columba livia, is the progenitor of the domesticated varieties that are well-known to many. The wild Rock Dove sports a pale grey plumage adorned with two striking black bars on each wing, while domestic and feral pigeons exhibit a kaleidoscope of colors and patterns.

Originally hailing from Southern Europe, North Africa, and Western Asia, Rock Doves have spread to cities worldwide. Their population is abundant, with millions of feral and wild birds established across the globe.

Adult Rock Doves typically measure between 29 to 37 cm in length, boasting a wingspan of 62 to 72 cm. They possess a dark bluish-grey head, neck, and chest, with an iridescent sheen that dances in shades of yellow, green, and reddish-purple along their neck and wing feathers. The eyes are often a vivid orange, red, or golden color, surrounded by bluish-grey skin. The bill is a muted grey-black, capped with a noticeable off-white cere, and the feet present in purplish-red hues.

Rock Doves favor open and semi-open environments where they can forage on the ground. In the wild, they roost and breed on cliffs and rock ledges, but have adapted remarkably well to urban environments where buildings mimic their natural nesting sites.

Rock Doves are generally monogamous and exhibit strong parental care, with both parents tending to their young. They are gregarious outside of the breeding season, often forming large flocks. Their flight is characterized by a mix of powerful wingbeats and graceful gliding, with a distinctive V-shaped wing posture.

The Rock Dove's call is a soft, cooing sound that varies slightly depending on the context, such as an alarm call or a nest call. Non-vocal sounds include the loud flapping noise at take-off and the snapping of beaks, particularly by juveniles.

Rock Doves breed throughout the year, peaking in spring and summer. They typically lay two eggs per brood, with both parents sharing incubation duties. The young, called squabs, are fed on "crop milk" produced by both parents.

These birds are omnivorous, with a preference for plant matter such as fruits and grains. They have adapted to urban environments where they often scavenge for human-provided food sources.

3-5-2017 CORDOBA, ANDALUCIA - GREAT TIT (Parus major)

The great tit (Parus major) is a small passerine bird, easily recognized by its black head and neck, striking white cheeks, olive upperparts, and vibrant yellow underparts. This bird is the most widespread species in the genus Parus, found across Europe, the Middle East, Central Asia, and parts of North Africa.

Males are characterized by their bright plumage, with a black bib that extends down the belly, bordered by a lemon-yellow breast. Females and juveniles are similar but have duller coloration. The black line down the belly is also narrower and sometimes broken in these birds.

Great tits favor a variety of woodland habitats, including deciduous and mixed forests, forest edges, and even urban parks and gardens. They are also found in riverine woodlands and, in some regions, boreal taiga.

This species is resident throughout its range, which extends from the Iberian Peninsula to the Amur Valley, and from Scandinavia to the Middle East. It is generally non-migratory, except in harsh winters when it may move to more temperate areas.

Great tits are known for their intelligence and adaptability. They exhibit a range of foraging behaviors and can solve problems with insight learning. They are also cavity nesters and are monogamous, with both parents involved in raising the chicks.

The great tit has a repertoire of up to 40 calls and songs, with the male being particularly vocal. A common call resembles the phrase "teacher, teacher," which is used to proclaim territory.

Breeding occurs once a year, with the female laying up to 12 eggs in a cavity nest. The female incubates the eggs alone, but both parents feed the chicks. In most years, the pair will raise two broods.

In summer, the diet is predominantly insectivorous, while in winter, it expands to include seeds and berries. Great tits are adept at handling large food items and are known to visit bird feeders in urban areas.

The great tit is classified as Least Concern by the IUCN, with a stable and widespread population estimated to be between 300 and 1,100 million birds. It has adapted well to human changes in the environment and is not currently at risk.

3-5-2017 CORDOBA, ANDALUCIA - MUSKOVY DUCK (Cairina moschata)

The Muscovy duck, Cairina moschata, is a robust bird native to the Americas. Males are substantially larger than females, with the former reaching lengths of about 76 cm and weighing up to 7 kg, while the latter grow to roughly half that size. The plumage is predominantly black and white, with males displaying iridescent and glossy back feathers, and females appearing more subdued. The amount of white on the neck and head varies, as does the bill color, ranging from yellow to pink to black, or a combination thereof. Both sexes possess distinctive pink or red wattles around the bill, with the male's being larger and more vivid.

Muscovy ducks can be identified by their large size, long claws on their feet, and a broad, flat tail. The males, or drakes, have a more pronounced appearance with caruncles at the base of the bill and a low erectile crest of feathers. Ducklings are mostly yellow with buff-brown markings on the tail and wings, and they lack the adult's wattles for a period after hatching.

These ducks are typically found in forested swamps, lakes, streams, and nearby grasslands. They are known to roost in trees at night.

Originally from the Rio Grande Valley of Texas and Mexico down to Argentina and Uruguay, feral populations have established themselves in New Zealand, Australia, Central and Eastern Europe, and parts of North America, including Florida, Louisiana, Massachusetts, and the Big Island of Hawaii.

3-5-2017 CORDOBA, ANDALUCIA - HOUSE SPARROW (FEMALE) (Passer domesticus)

The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz). Females and young birds are coloured pale brown and grey, and males have brighter black, white, and brown markings. One of about 25 species in the genus Passer, the house sparrow is native to most of Europe, the Mediterranean Basin, and a large part of Asia. Its intentional or accidental introductions to many regions, including parts of Australasia, Africa, and the Americas, make it the most widely distributed wild bird.

The house sparrow is strongly associated with human habitation, and can live in urban or rural settings. Though found in widely varied habitats and climates, it typically avoids extensive woodlands, grasslands, polar regions, and hot, dry deserts far away from human development. For sustenance, the house sparrow routinely feeds at home and public bird feeding stations, but naturally feeds on the seeds of grains, flowering plants and weeds. However, it is an opportunistic, omnivorous eater, and commonly catches insects, their larvae, caterpillars, invertebrates and many other natural foods.

3-5-2017 CORDOBA, ANDALUCIA - HOUSE SPARROW (FEMALE) (Passer domesticus)

The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz). Females and young birds are coloured pale brown and grey, and males have brighter black, white, and brown markings. One of about 25 species in the genus Passer, the house sparrow is native to most of Europe, the Mediterranean Basin, and a large part of Asia. Its intentional or accidental introductions to many regions, including parts of Australasia, Africa, and the Americas, make it the most widely distributed wild bird.

The house sparrow is strongly associated with human habitation, and can live in urban or rural settings. Though found in widely varied habitats and climates, it typically avoids extensive woodlands, grasslands, polar regions, and hot, dry deserts far away from human development. For sustenance, the house sparrow routinely feeds at home and public bird feeding stations, but naturally feeds on the seeds of grains, flowering plants and weeds. However, it is an opportunistic, omnivorous eater, and commonly catches insects, their larvae, caterpillars, invertebrates and many other natural foods.

3-5-2017 CORDOBA, ANDALUCIA - MALLARD (MALE) (Anas platyrhynchos)

The Mallard is the ancestor of nearly all domestic duck breeds (everything except the Muscovy Duck). Domestic ducks can be common in city ponds and can be confusing to identify—they may lack the white neck ring, show white on the chest, be all dark, or show oddly shaped crests on the head.

The widespread Mallard has given rise to a number of populations around the world that have changed enough that they are considered separate species. The Mexican Duck of central Mexico and the extreme southwestern United States and the Hawaiian Duck both are closely related to the Mallard, and in both forms the male is dull like the female. Both have been given full species status.

Mallard pairs are generally monogamous, but paired males pursue females other than their mates. So-called “extra-pair copulations” are common among birds and in many species are consensual, but male Mallards often force these copulations, with several males chasing a single female and then mating with her.

3-5-2017 CORDOBA, ANDALUCIA - MALLARD (FEMALE) (Anas platyrhynchos)

The Mallard, or wild duck (Anas platyrhynchos), is a familiar and widespread dabbling duck with a presence across temperate and subtropical regions of the Americas, Eurasia, and North Africa. It has also been introduced to parts of the Southern Hemisphere. The male is renowned for its iridescent green head and white collar, while the female sports a brown-speckled plumage. Both sexes boast a speculum—a patch of feathers with iridescent purple or blue hues bordered by white. The Mallard's length ranges from 50 to 65 cm, with a wingspan of 81 to 98 cm, and it typically weighs between 0.7 and 1.6 kg.

Males during the breeding season are unmistakable with their glossy green heads, white collars, and purple-tinged brown breasts. Females are mottled brown with buff cheeks and an eye-stripe. Both sexes have the distinctive speculum on their wings. The male's bill is yellowish-orange tipped with black, while the female's is darker, ranging from black to mottled orange and brown.

Mallards are found in a variety of wetlands, including parks, small ponds, rivers, lakes, and estuaries. They prefer water depths less than 0.9 meters and are drawn to areas with aquatic vegetation.

This species is distributed across the Northern and Southern Hemispheres, from Alaska to Mexico, the Hawaiian Islands, across the Palearctic, and down to southeastern and southwestern Australia and New Zealand.

Mallards are social birds that often form large flocks outside the breeding season. They are adaptable and can thrive in urban areas. The species is migratory in the northern parts of its range.

The female Mallard is known for its quintessential "quack," while the male's call is a quieter and deeper version of the female's. Vocalizations can vary by region, with urban ducks being louder than their rural counterparts.

Breeding pairs form in the fall, with the female laying 8 to 13 creamy white to greenish-buff eggs. Incubation lasts 27 to 28 days, and ducklings are precocial, swimming immediately after hatching.

Mallards are omnivorous, feeding on a variety of foods including seeds, plant matter, insects, crustaceans, and small animals. Their diet varies with the season and breeding cycle.

3-5-2017 CORDOBA, ANDALUCIA - EURASIAN REED WARBLER (Acrocephalus scirpaceus)

The Common Reed Warbler, Acrocephalus scirpaceus, is a medium-sized warbler measuring approximately 13 cm in length with a wingspan ranging from 17 to 21 cm. It exhibits an unstreaked brown back with buff underparts. Both sexes are identical in appearance, which is typical for warblers. Juveniles can be distinguished by their richer buff underparts. The species is characterized by a flattened forehead and a robust, pointed bill.

When identifying the Common Reed Warbler, look for its brown, unstreaked back and buff underparts. The bird's supercilium is less pronounced than that of the larger Great Reed Warbler. In flight, observe the wing-span and listen for its distinctive song.

This species is almost exclusively found in reed beds, often with interspersed bushes, providing it with the necessary cover and nesting sites.

The Common Reed Warbler breeds across Europe into the temperate western Palaearctic and is migratory, wintering in sub-Saharan Africa. It is also a resident species in large parts of Africa.

Males typically arrive at breeding grounds a few weeks before females. The species is generally monogamous, with pairs raising up to two broods per season. It is known to be brood parasitized by the Common Cuckoo.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - YELLOW WARBLER (Setophaga petechia)

The yellow warbler (Setophaga petechia) is a New World warbler species. Yellow warblers are the most widespread species in the diverse genus Setophaga, breeding in almost the whole of North America, the Caribbean, and down to northern South America.

The genus name Setophaga is from Ancient Greek ses, "moth", and phagos, "eating", and the specific petechia is from Italian petecchia, a small red spot on the skin.

As usual for members of the Parulidae, yellow warblers nest in trees, building a small but very sturdy cup nest. Females and males rear the young about equally, but emphasize different tasks: females are more involved with building and maintaining the nest, and incubating and brooding the offspring. Males are more involved in guarding the nest site and procuring food, bringing it to the nest and passing it to the waiting mother, which does most of the actual feeding. As the young approach fledging, the male's workload becomes proportionally higher.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - HOUSE WREN (Troglodytes aedon)

The House Wren (Troglodytes aedon) is a diminutive member of the wren family, Troglodytidae, with a widespread presence across the Americas. This bird is recognized by its small stature, typically measuring 11 to 13 cm in length with a wingspan of 15 cm, and weighing between 10 to 12 grams. Its plumage varies considerably among subspecies, ranging from dull greyish-brown to rich rufescent-brown on the upper parts, and from brown to buff, pale grey, or pure white on the underparts. All subspecies exhibit blackish barring on the wings and tail, and some also on the flanks.

House Wrens possess a faint eye-ring and eyebrow, a long, thin bill with a blackish upper mandible and a black-tipped yellowish or pale grey lower mandible. Their legs are pinkish or grey, and they are known for their short, often cocked tail.

In North America, House Wrens favor floodplain forests in the western great plains, utilizing woodpecker holes for nesting. In Central and South America, they adapt to virtually any habitat and are frequently found in close proximity to human settlements.

The House Wren's range extends from Canada to the southernmost regions of South America, making it the most widely distributed native bird in the Americas. It is particularly common in suburban areas within its range.

These birds are active foragers in vegetation, primarily consuming insects such as butterfly larvae, beetles, bugs, as well as spiders and snails. They are known for their feisty and pugnacious nature, sometimes destroying the eggs of other birds within their territory.

The House Wren's rich bubbly song is a familiar sound during the nesting season, with notable geographical variation. The song differs significantly between populations from the far north and south of the species' range.

House Wrens construct large cup nests in cavities, lined with various materials such as feathers, hair, and moss. The female lays a clutch of two to eight red-blotched cream-white eggs, which she incubates for about 12 to 19 days. Both parents feed the nestlings, which fledge after approximately 15 to 19 days.

House Wrens actively forage for insects and other small invertebrates within vegetation. They are adept at hunting down their prey, which includes butterfly larvae, beetles, bugs, spiders, and snails.

The House Wren is classified as Least Concern by the IUCN. However, some island populations are rare, endangered, or possibly extinct, primarily due to habitat destruction, predation by introduced species, and natural disasters.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - VARIEGATED SQUIRREL (Sciurus variegatoides)

The variegated squirrel (Sciurus variegatoides ) is a tree squirrel in the genus Sciurus found in Costa Rica, El Salvador, Guatemala, Honduras, southern Mexico, Nicaragua, and Panama. Fifteen subspecies are recognised. It is a common squirrel and the International Union for Conservation of Nature has rated it a "least-concern species". Variegated squirrels kept as pets in Germany have been implicated in the transmission of a bornavirus to humans from which three people have died.

Variegated squirrels are medium-sized tree squirrels. The are several subspecies recognised which differ in appearance. There is even often a considerable variation between the appearances of individuals in the same population. The dorsal colouration varies between dark brown to yellowish grey. The neck tends to be darker than other parts and there is often a paler patch behind the ears. The underparts are usually some shade of cinnamon. The tail is long and densely bushy; in Mexico it is black, sometimes with white tips to the hairs giving it a frosted appearance. In Nicaragua and Costa Rica, some individuals have pale underparts and tails.

Variegated squirrels are native to Central America. Their range extends from Mexico southwards through Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama. Habitats in which these squirrels occur include both dry deciduous forest and evergreen forest, secondary growth, and plantations.

Variegated squirrels are solitary and diurnal animals. They seldom descend to the ground and spend the night in a nest. Sometimes they build nests in a hole in a tree but more often construct them of leaves and build in the fork of a branch close to the trunk. These squirrels don't hibernate and spend most of their time in the trees. They are very agile and leap from one branch to another with ease. When threatened Variegated squirrels make chucking sounds and sometimes produce harsh chatter.

Variegated squirrels are herbivores (granivores, frugivores). They primarily are seed-eaters, but also consume fruits, some insects and nestlings. They try to avoid hard shelled seeds but do consume acorns.

Little information is known about the mating habits in Variegated squirrels. The breeding season occurs in April-May. Females build nests high up in the trees where they give birth to 2-8 kittens. The gestation period lasts around 33-46 days. Young are born blind and naked. Fur starts growing after 2 weeks and in 30-32 days kittens open their eyes. Young stay in the nest within 6 weeks and become weaned at 10 weeks after birth. They are independent after 15 weeks and reach reproductive maturity between 12 and 15 weeks of age.

2-5-2017 CORDOBA, ANDALUSIA - EURASIAN PENDULINE TIT (FEMALE) (Remiz pendulinus)

The Eurasian penduline tit, Remiz pendulinus, is a diminutive passerine, a member of the Remizidae family. It is adorned with a light grey head, a distinctive black "mask" through the eye, and a back of rich chestnut brown. Both sexes are remarkably similar, though the male boasts a broader mask and a more rufous back. This bird measures between 10 and 11.5 centimeters in length, with a finely pointed bill and a tail that is relatively elongated.

When attempting to identify the Eurasian penduline tit, look for its small size, the pointed bill, and the long tail. The male's mask is broader and the back more rufous compared to the female. The bird's light grey head and black eye mask are key distinguishing features.

The Eurasian penduline tit is known to favor habitats with thin, long branches of trees such as willow, elm, or birch, often choosing locations above water. It is also found in reed beds, where it may construct its unique nests.

This species is relatively widespread across the western Palearctic. It exhibits migratory behavior in the northern parts of its range, while populations in the southern regions tend to be resident.

The Eurasian penduline tit is known for its elaborate hanging nests, which are a marvel of avian architecture. These nests, once repurposed as children's slippers in Central Europe, are suspended from branches or reeds. The species is migratory in the north and resident in the south of its range.

Breeding occurs from the end of April to the beginning of July. The nest is a large, free-hanging pouch with an entrance tube, constructed from plant fibers, grass, hair, and wool. Both sexes partake in the 20-day construction process. The clutch typically contains 6 to 8 white eggs, with incubation starting after the last egg is laid and lasting for 14 days. The young are cared for by one parent and fledge at around 22 days.

The diet of the Eurasian penduline tit primarily consists of insects, spiders, and seeds, particularly from willows. It forages in trees and reeds, adeptly using one foot to cling while the other manipulates food sources.

The Eurasian penduline tit is classified as Least Concern by the IUCN. With a large range and a population estimated at 420,000–840,000 individuals in Europe, and signs of population increase, the species does not currently face significant threats to its survival.

19-3-2017 MIAMI, FLORIDA - BLACK AND WHITE SEED-EATER (Sporophila luctuosa)

The black-and-white seedeater (Sporophila luctuosa) is a species of bird in the family Thraupidae. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela. Its natural habitats are subtropical or tropical moist shrubland, subtropical or tropical high-altitude shrubland, and heavily degraded former forest.

Well-named seedeater found from Venezuela to Bolivia. Male is all black above with a white patch at base of primaries and white belly. Could be confused with Yellow-bellied Seedeater, but that species lacks the wing patch and the belly is pale yellow. Females are brown and extremely similar to other seedeaters; look for accompanying males to help you identify! Generally an Andean species, found up to about 2,500 m, but sometimes wanders into adjacent lowlands. Uncommon in grassland or edge scrub, often in flocks with other seedeaters.

2-5-2017 CORDOBA, ANDALUSIA - EURASIAN PENDULINE TIT (MALE) (Remiz pendulinus)

The Eurasian penduline tit, Remiz pendulinus, is a diminutive passerine, a member of the Remizidae family. It is adorned with a light grey head, a distinctive black "mask" through the eye, and a back of rich chestnut brown. Both sexes are remarkably similar, though the male boasts a broader mask and a more rufous back. This bird measures between 10 and 11.5 centimeters in length, with a finely pointed bill and a tail that is relatively elongated.

When attempting to identify the Eurasian penduline tit, look for its small size, the pointed bill, and the long tail. The male's mask is broader and the back more rufous compared to the female. The bird's light grey head and black eye mask are key distinguishing features.

The Eurasian penduline tit is known to favor habitats with thin, long branches of trees such as willow, elm, or birch, often choosing locations above water. It is also found in reed beds, where it may construct its unique nests.

This species is relatively widespread across the western Palearctic. It exhibits migratory behavior in the northern parts of its range, while populations in the southern regions tend to be resident.

19-3-2017 MIAMI, FLORIDA - ASIAN BLUE QUAIL (MALE) (Synoicus chinensis)

The king quail (Synoicus chinensis), also known as the blue-breasted quail, Asian blue quail, Chinese painted quail, or Chung-Chi, is a species of Old World quail in the family Phasianidae. This species is the smallest "true quail", ranging in the wild from southern China, South and Southeast Asia to Oceania, south to southeastern Australia, with 9 different subspecies. A failed attempt was made to introduce this species to New Zealand by the Otago Acclimatisation Society in the late 1890s. It is quite common in aviculture worldwide, where it is sometimes misleadingly known as the "button quail", which is the name of an only very distantly related family of birds, the buttonquails.

Male king quail occur in many colors, including blue, brown, silver, maroon, dark brown, and almost black. They have orange feet that are hard and able to withstand a continuous life on the ground like many other game birds. Females are similar to the males, but do not occur in shades of blue. They can live up to 13 years in captivity but typically only 3–6 years.[citation needed] In the wild. they may live only 1.5 years. The eggs of king quail are a light, creamy-brown colour and slightly pointed at the "top", roughly ovular in shape.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - TENNESSEE WARBLER (Oreothlypis peregrina)

The Tennessee warbler, a small bird of the New World warbler family, is a modestly adorned species. It measures approximately 11.5 cm in length, with a wingspan nearing 19.69 cm, and tips the scales at roughly 10 grams. The breeding male is characterized by an olive back, shoulders, rump, and vent, with flight feathers of a brownish-black hue. A slate grey adorns its neck, crown, and eyeline, while its underside is a muted gray-white. Females echo the males in pattern but are tinged with yellow and olive, particularly on the underside, presenting a much duller appearance. Both sexes boast long wings, a short tail, and a thin, pointy bill, with white undertail coverts persisting throughout the year.

When identifying the Tennessee warbler, look for the long wings and short tail, as well as the thin, pointy bill. The breeding male's slate gray neck, crown, and eyeline contrast with its olive back and gray-white underside. Females and juveniles are duller with yellow and olive tinges. In fall and winter, adult males show more yellow below, and the gray areas turn olive green. The yellow supraocular line is a distinctive feature on the face.

The Tennessee warbler is partial to coniferous forests, mixed conifer-deciduous woodlands, early successional habitats, and boreal bogs. These environments provide the resources necessary for its survival and breeding.

This warbler breeds from the Adirondack Mountains in New York to northern Vermont, New Hampshire, Maine, and across much of Canada. It is also found in northeast Minnesota and northern Michigan. Come winter, it migrates to southern Central America, the Caribbean, and northern regions of Colombia and Venezuela, with some venturing as far as Ecuador. It is named after Tennessee, a place it frequents during migration and is a rare visitor to western Europe.

The Tennessee warbler exhibits a nervous and quick demeanor while foraging, creeping along branches at various heights. It is solitary during nesting but joins mixed flocks post-breeding. Its population fluctuates with the abundance of the spruce budworm, a favored food source.

Females construct a cup-shaped nest from dried grasses and moss, lined with finer materials, either on the ground or above a bog. They lay 4–7 white eggs adorned with brown splotches.

The Tennessee warbler can be mistaken for the female black-throated blue warbler, which has a darker cheek and two white wing spots. It also resembles the red-eyed vireo, which is larger, moves more deliberately, and sings almost constantly. The orange-crowned warbler is another look-alike but lacks the white eyebrow, is greyer-brown above, and has yellow undertail coverts.

Diet and Feeding primarily insectivorous, the Tennessee warbler has a particular appetite for the spruce budworm. It also consumes flower nectar, fruit, and some seeds, adapting its diet to the available resources.

The Tennessee warbler is currently listed as Least Concern by the IUCN, indicating a stable population without immediate threats to its survival.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - MONARCH BUTTERFLY (Danaus plexippus)

The monarch butterfly or simply monarch (Danaus plexippus) is a milkweed butterfly (subfamily Danainae) in the family Nymphalidae. Other common names, depending on region, include milkweed, common tiger, wanderer, and black-veined brown. It is among the most familiar of North American butterflies and an iconic pollinator,[8] although it is not an especially effective pollinator of milkweeds. Its wings feature an easily recognizable black, orange, and white pattern, with a wingspan of 8.9–10.2 cm (3.5–4.0 in).[10] A Müllerian mimic, the viceroy butterfly, is similar in color and pattern, but is markedly smaller and has an extra black stripe across each hindwing.

The eastern North American monarch population is notable for its annual southward late-summer/autumn instinctive migration from the northern and central United States and southern Canada to Florida and Mexico. During the fall migration, monarchs cover thousands of miles, with a corresponding multigenerational return north in spring. The western North American population of monarchs west of the Rocky Mountains often migrates to sites in southern California, but individuals have been found in overwintering Mexican sites, as well. Non-migratory populations are found further south in the Americas, and in parts of Europe, Oceania, and Southeast Asia.

Like all Lepidoptera, monarchs undergo complete metamorphosis; their life cycle has four phases: egg, larva, pupa, and adult. Monarchs transition from eggs to adults during warm summer temperatures in as little as 25 days, extending to as many as seven weeks during cool spring conditions. During their development, both larvae and their milkweed hosts are vulnerable to weather extremes, predators, parasites, and diseases; commonly fewer than 10% of monarch eggs and caterpillars survive.

The range of the western and eastern populations of D. p. plexippus expands and contracts depending upon the season. The range differs between breeding areas, migration routes, and winter roosts.  However, no genetic differences between the western and eastern monarch populations exist; reproductive isolation has not led to subspeciation of these populations, as it has elsewhere within the species' range.

In the Americas, the monarch ranges from southern Canada through northern South America. It is also found in Bermuda, the Cook Islands, Hawaii, Cuba, and other Caribbean islands,the Solomons, New Caledonia, New Zealand, Papua New Guinea, Australia, the Azores, the Canary Islands, Madeira, continental Portugal, Gibraltar, the Philippines, and Morocco. It appears in the UK in some years as an accidental migrant.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - EMERALD SWIFT LIZARD (Sceloporus malachiticus)

Sceloporus malachiticus, the emerald swift or green spiny lizard, is a species of small lizard in the Phrynosomatidae family, native to Central America.

Emerald swifts are distinctly bright green in color, with males typically being more striking than females, having bright blue patches on either side of the belly. They grow from 6-8 inches (15-20 cm) in length. Like other species in the genus Sceloporus, their scales tend to be fairly stiff and heavily keeled, giving them a spiny texture.

The emerald swift is found from Mexico's Yucatan region, to Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama.

Emerald swifts are diurnal, arboreal lizards. In the early morning they forage for insects, and then spend much of the day basking in the sun. They will retreat to a burrow, or under a rock or log if the temperature becomes too high or to sleep. Their life spans are believed to be between three and five years. Unlike most iguanid lizards, emerald swifts are ovoviviparous, giving birth to six to 15 young yearly.

22-3-2017 HOTEL BOUGANVILLEA, COSTA RICA - INCA DOVE (Columbina inca)

The Inca dove, also known as the Mexican dove, is a small and slender New World dove with a length ranging from 16.5 to 23 cm and a weight between 30 to 58 grams. Its gray-brown plumage is adorned with a unique scaled pattern, and it possesses a long, square tail with white-edged feathers that may become more prominent during flight. Notably, the underwings exhibit a reddish hue, characteristic of ground doves.

When observing the Inca dove, look for its scaled feather pattern and the white edges on its square tail. In flight, the reddish underwings are a distinguishing feature. Additionally, listen for the soft rattling noise produced by its wings upon takeoff.

The Inca dove is a terrestrial bird that forms flocks in deserts, scrublands, cultivated areas, and even urban environments. It is well-adapted to living in close proximity to human settlements, where it often takes advantage of readily available water sources.

This species is found from Costa Rica in the south to the American Southwest in the north. Its range has been expanding in recent decades, although it is not native to the historical lands of the Inca Empire. In the United States, the Inca dove has been observed in Florida, although it is unclear if a self-sustaining population exists there.

Inca doves exhibit communal roosting behavior during winter, forming pyramid-shaped huddles that can include more than ten birds to conserve body heat. They are also known to form large flocks outside their territories, sometimes numbering up to 100 individuals.

The Inca dove's song is a forceful cooing that can be interpreted as "cowl-coo," "POO-pup," or "NO-hope." This vocalization is typically delivered from an elevated perch such as a tree, wire, or even a television aerial.

Nesting primarily occurs in trees and shrubs, with nests averaging about 5 centimeters in diameter. Both male and female doves contribute to nest building, using twigs, grass, weed stalks, and leaves. The nests are often reused and become more solidified with the excrement of the brood.

Inca doves primarily feed on grass seeds. Their presence in urban and agricultural areas suggests they may also consume other seeds and take advantage of water from irrigation systems.

The Inca dove is currently listed as Least Concern by the IUCN Red List, indicating that it is not at immediate risk of population decline or extinction.