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Sunday, 26 March 2017

25-3-2017 RANCHO NATURALISTA, COSTA RICA - BARE THROATED TIGER HERON (Tigrisoma mexicanum)




25-3-2017 RANCHO NATURALISTA, COSTA RICA - SUN BITTERN (Eurypyga helias)






25-3-2017 RANCHO NATURALISTA, COSTA RICA - SUN BITTERN (FEMALE) (Eurypyga helias)


24-3-2017 RANCHO NATURALISTA, COSTA RICA - WHITE NECKED JACOBIN (MALE) (Florisuga mellivora)


The White-necked Jacobin, scientifically known as Florisuga mellivora, is a medium-sized hummingbird adorned with a striking plumage. The male is particularly distinctive, boasting a dark blue head and chest, contrasted by a pure white belly and tail, the latter tipped with black. A white band graces the nape, setting apart the blue head from the vibrant green back and elongated uppertail coverts. Females exhibit a more variable appearance, often showing green upperparts and a blue-green throat, with white "scales" and a white belly. Their tails are mostly green with a blue terminal band.


Males are unmistakable with their contrasting blue and white plumage. Females and immatures can be more challenging to identify due to their variability, but typically females have less white in the tail and a bronzy hue on the throat and chest.

This species is found in the canopy and edges of humid forests, as well as in semi-open areas like tall secondary forests, gallery forests, and plantations of coffee and cacao. It tends to stay high in the trees but may descend to lower levels at forest edges and clearings.


The White-necked Jacobin ranges from Mexico through Central America and into northern South America, including Brazil, Peru, and Bolivia. It is also present in Trinidad & Tobago. The nominate subspecies, F. m. mellivora, is widespread, while F. m. flabellifera is endemic to the island of Tobago.

This hummingbird's movement patterns are not fully understood, but it seems to shift seasonally in response to flowering patterns. It is known to be aggressive towards conspecifics when feeding but is not typically territorial.

The White-necked Jacobin is not a particularly vocal species. Its song consists of a series of high-pitched notes, while its calls include a short 'tsik', a high-pitched 'sweet', and a descending 'swee-swee-swee-swee' during antagonistic interactions.


Breeding occurs during the dry to early wet seasons, with timing varying across its range. The nest is a shallow cup made of plant down and cobwebs, often situated on a leaf and sheltered by another leaf overhead. Males engage in display flights and chases, while females perform fluttering flights to distract predators.

The diet consists primarily of nectar from flowers of tall trees, epiphytes, shrubs, and Heliconia plants. They are also insectivorous, hawking small insects through various aerial maneuvers.

The IUCN has classified the White-necked Jacobin as Least Concern due to its extremely large range. While the population size is not quantified, and trends are unknown, the species is considered uncommon to common throughout its range and is able to adapt to human-modified habitats.

Saturday, 25 March 2017

26-3-2017 RANCHO NATURALISTA, COSTA RICA - RUFOUS CRESTED COQUETTE (Lophornis delattrei)


The rufous-crested coquette (Lophornis delattrei) is a species of hummingbird native to the tropical slopes of pacific South America. Due to its small size and population, it is a rare sight even within its native region. Males of the species can be easily distinguished by their striking rufous coloured spiked crests, and females, while less obvious, can be identified by their small size and rufous coloured foreheads.

The species inhabits the Pacific and Caribbean mountainsides of Peru, Bolivia, Colombia, Ecuador, Panama, and Costa Rica; and at least one observation of the species has been reported in western Brazil. The species is primarily found in altitudes of 500m 1,900m above sea level, likely inhabiting higher altitudes when breeding and lower when not. Rufous-crested Croquettes favour humid forests with evergreen or semi-deciduous compositions, and travel large distances within these ecosystems in search of suitable foods. In a homing experiment with frilled coquettes, this genetically similar species was seen to navigate ranges of up to 15 km.

26-3-2017 RANCHO NATURALISTA, COSTA RICA - BARRED ANTSHRIKE (Thamnophilus doliatus)


The barred antshrike (Thamnophilus doliatus) is a passerine bird in the antbird family. It is found in the Neotropics from Tamaulipas, Mexico, through Central America, Trinidad and Tobago, and a large part of South America east of the Andes as far south as northern Argentina, Bolivia and Paraguay. There is one accepted record from southern Texas. It is found in a wide range of wooded habitats (even gardens and parks) in both humid and arid regions. Throughout a large part of its range, it is among the most common antbirds.


24-3-2017 RANCHO NATURALISTA, COSTA RICA - BLACK CHEEKED WOODPECKER (Melanerpes pucherani)


The black-cheeked woodpecker (Melanerpes pucherani ) is a resident breeding bird from southeastern Mexico south to western Ecuador.

This woodpecker occurs in the higher levels of wet forests, semi-open woodland and old second growth. It nests in an unlined hole 6–30 m (20–98 ft) high in a dead tree. The clutch is two to four glossy white eggs, incubated by both sexes.

The binomial commemorates the French zoologist Jacques Pucheran.

The black-cheeked woodpecker feeds on insects, but will take substantial quantities of fruit and nectar.


This common and conspicuous species gives a rattling krrrrrl call and both sexes drum on territory.

Medium-sized woodpecker of evergreen forests and their edges in tropical lowlands. Less numerous than the larger and more conspicuous Golden-fronted Woodpecker, which occurs in the same areas. Distinctive, with a large black mask, white patch behind the eyes, black upperparts with narrow white bars and a large white patch on the rump. The male has an entire red crown. In the female the front is greyish and the back is red.


The adult is 18.5 cm (7.3 in) long and weighs 63 g (2.2 oz). It has black upperparts with white barring on the back, white spotting on the wings and a white rump. The tail is black with some white barring, and the underparts are pale buff-olive with a red central belly. There is a black patch through the eyes and on the cheeks, a yellow forehead, and a red nape. The crown is red in the male and black in the female. Young birds are duller, have less white above and less red on the belly.

The Black-cheeked Woodpecker has black upperpart with white-barred mantled and spotted wings. The face and sides of the neck are also black. The throat and breast are brownish-buff with barred belly and central red area. The male has a red cap and nape. Females have only the nape red. It is the only medium size woodpecker with a dark back within its range. Resembles the Yellow-tufted Woodpecker, but their ranges do not overlap.

23-3-2017 TROGON LODGE, COSTA RICA - TREE SWALLOW (Tachycineta bicolor)


The Tree swallow (Tachycineta bicolor) is a migratory bird found in the Americas. It was first described in 1807 by French ornithologist Louis Vieillot as Hirundo bicolor. This bird spends most of its time flying and chasing after insects in acrobatic twists and turns. Because of its large range and stable population, the Tree swallow is considered to be least concern by the International Union for Conservation of Nature. In the US, it is protected by the Migratory Bird Treaty Act of 1918, and in Canada by the Migratory Birds Convention Act.



The male Tree swallow has mostly glossy blue-green upperparts, the wings and tail being blackish. The underparts and the cheek patch are white, although the underwing coverts are grey-brown. The bill is black, the eyes dark brown, and the legs and feet pale brown. The female is duller in colour than the male, and sometimes has a brown forehead. The second-year female also has brown upperparts, with a variable number of blue feathers; some third-year females also retain a portion of this subadult plumage. The juvenile Tree swallow can be distinguished by its brown upperparts and grey-brown-washed breast.

Tree swallows breed in the United States and Canada. They winter along southern US coasts, along the Gulf Coast, to Panama and the northwestern coast of South America, and in the West Indies. The breeding habitat of these birds is primarily open and wooded areas, especially those near water; these may include marshes, ponds, bogs, wooded swamps, and lakes. Tree swallows prefer to rest in cane or reed beds over water, but may also be found over land and on trees and wires.

23-3-2017 TROGON LODGE, 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.

23-3-2017 TROGON LODGE, COSTA RICA - CLAY COLOURED THRUSH (Turdus grayi)


The Clay-colored Thrush, Turdus grayi, is a bird of modest plumage, its feathers a subtle palette of brown hues, lighter on the flanks and faintly streaked on the throat. This bird, similar in size to the American Robin, measures approximately 23 to 27 centimeters in length and weighs between 74 to 76 grams. The young are distinguished by a faint mottling on their backs and underparts. Notable identification features include a greenish-yellow bill with a dark base, pinkish or flesh-colored legs, and reddish irises.

The song of the Clay-colored Thrush is a series of slurred musical phrases, often repeated irregularly at a slow, steady tempo. Its flight call is a harsher version of the American Robin's "tock." During the dry season, its mating call varies significantly across regions.


When identifying the Clay-colored Thrush, look for its brownish plumage, which is lighter below and lightest on the flanks. The throat bears faint streaks, and the bird's bill is greenish-yellow with a dark base. The legs are pinkish or flesh-colored, and the irises are a distinctive reddish color. Juveniles may exhibit faint mottling on their back and underparts.

The Clay-colored Thrush is a familiar sight in yards and gardens, much like its relatives the American Robin, the Eurasian Blackbird, and the Song Thrush. It thrives in a variety of habitats, from South Texas to northern Colombia, often found in human-altered landscapes where fruiting trees are present.


This bird's range extends from South Texas, where it is expanding its territory, to northern Colombia. It is predominantly found on the Atlantic slope west and north of the Isthmus of Tehuantepec, with an isolated population around Oaxaca City, Mexico.

The Clay-colored Thrush is known to forage on the ground or near it, usually alone or in pairs, though it may gather in flocks in fruiting trees. It is also known to follow army ants to capture small prey disturbed by the ants' movement.


The breeding season for the Clay-colored Thrush spans from March to July. It constructs a sturdy cup nest from grass, moss, feathers, leaves, and mud, often utilizing human structures for support. The female lays 2 to 4 pale blue eggs adorned with red-brown and gray markings and may produce two broods per season. The species is known for its aggressive defense of its nest, even against large raptors.

The Clay-colored Thrush may be confused with other Turdus species, but its unique coloration, reddish irises, and regional song variations help distinguish it from its relatives.

This thrush primarily feeds on fruit and invertebrates, foraging on the ground or in trees. It is opportunistic, sometimes taking advantage of disturbances caused by army ants to find prey.

The IUCN Red List classifies the Clay-colored Thrush as Least Concern, indicating a stable population without significant threats to its survival.

23-3-2017 TROGON LODGE, COSTA RICA - BLUE GREY TANAGER (Thraupis episcopus)


The blue-gray tanager (Thraupis episcopus ) is a medium-sized South American songbird of the tanager family, Thraupidae. Its range is from Mexico south to northeast Bolivia and northern Brazil, all of the Amazon Basin, except the very south. It has been introduced to Lima (Peru). On Trinidad and Tobago, this bird is called blue jean.

The blue-gray tanager is 16–18 cm (6.3–7.1 in) long and weighs 30–40 g (1.1–1.4 oz). Adults have a light bluish head and underparts, with darker blue upperparts and a shoulder patch colored a different hue of blue. The bill is short and quite thick. Sexes are similar, but the immature is much duller in plumage.


The song is a squeaky twittering, interspersed with tseee and tsuup call notes.

The breeding habitat is open woodland, cultivated areas and gardens. The blue-gray tanager lives mainly on fruit, but will also take some nectar and insects. This is a common, restless, noisy and confiding species, usually found in pairs, but sometimes small groups. It thrives around human habitation, and will take some cultivated fruit like papayas (Carica papaya ).


One to three, usually two, dark-marked whitish to gray-green eggs are laid in a deep cup nest in a high tree fork or building crevice. Incubation by the female is 14 days with another 17 to fledging. The nest is sometimes parasitised by Molothrus cowbirds.

Two birds studied in the Parque Nacional de La Macarena of Colombia were infected with microfilariae, an undetermined Trypanosoma species, and another blood parasite that could not be identified. Two other birds, examined near Turbo (also in Colombia), did not have blood parasites.

Widespread and common throughout its large range, the blue-gray tanager is evaluated as Least Concern on the IUCN Red List of Threatened Species.

Friday, 24 March 2017

23-3-2017 TROGON LODGE, COSTA RICA - PURPLE THROATED MOUNTAIN GEM HUMMINGBIRD (FEMALE)






25-3-2017 CATIE CENTER, COSTA RICA - BOAT BILLED HERON (Cochlearius cochlearius)


The boat-billed heron (Cochlearius cochlearius), colloquially known as the boatbill, is an atypical member of the heron family. It is the only member of the genus Cochlearius and was formerly placed in a monotypic family, the Cochleariidae. It lives in mangrove swamps from Mexico south to Peru and Brazil. It is a nocturnal bird, and breeds semicolonially in mangrove trees, laying two to four bluish-white eggs in a twig nest.

23-3-2017 TROGON LODGE, COSTA RICA - BLACK FACED SOLITAIRE (Myadestes melanops)



23-3-2017 TROGON LODGE, COSTA RICA - ACORN WOODPECKER (Melanerpes formicivorus)








24-3-2017 RANCHO NATURALISTA, COSTA RICA - GOLDEN HEADED TANAGER (Stilpnia larvata)


The golden-hooded tanager (Stilpnia larvata) is a medium-sized passerine bird. This tanager is a resident breeder from southern Mexico south to western Ecuador.

Adult golden-hooded tanagers are 13 cm (5.1 in) long and weigh 19 g (0.67 oz). The adult male has a golden head with a black eyemask edged with violet blue above and below. The upperparts of the body are black apart from the turquoise shoulders, rump and edgings of the wings and tail. The flanks are blue and the central belly is white. Females have a greenish tinge to the head, sometimes with black speckling on the crown, and more extensively white underparts. Immatures are duller, with a green head, dark grey upperparts, off-white underparts, and little blue in the plumage.

The golden-hooded tanager's call is a sharp tsit and the song is a tuneless rattled series of tick sounds.

It resides from sea level to 1,500 m (4,900 ft) altitude in the canopy of dense forests and semi-open areas like clearings, second growth and well-vegetated gardens.

Golden-hooded tanagers occur in pairs, family groups or as part of a mixed-species feeding flock. They eat certain small fruit (e.g. of Trophis racemosa (Moraceae) usually swallowed whole, and insects are also taken.

The cup nest is built in a tree fork or in a bunch of green bananas, and the normal clutch is two brown-blotched white eggs. This species is often double-brooded, and the young birds from the first clutch assist with feeding the second brood of chicks.

Thursday, 23 March 2017

24-3-2017 RANCHO NATURALISTA, COSTA RICA - GOLDEN OLIVE WOODPECKER (Colaptes rubiginosus)


The golden-olive woodpecker (Colaptes rubiginosus) is a species of bird in the subfamily Picinae of the woodpecker family Picidae. It is found from Mexico south and east through Panama, in every mainland South American country except Chile, Paraguay, and Uruguay, and Trinidad and Tobago.

The golden-olive woodpecker was originally described as the "brown woodpecker" (Picus rubiginosus). It was later placed in the genus Piculus but since about 2007 has been moved into Colaptes by taxonomic systems.

23-3-2017 TROGON LODGE COSTA RICA - GARTERED TROGON (Trogon caligatus)




23-3-2017 TARCOLES RIVER, COSTA RICA - BLACK THROATED TROGON (FEMALE) (Trogon rufus)


The black-throated trogon, also known as yellow-bellied trogon, (Trogon rufus) is a near passerine bird in the trogon family, Trogonidae. Although it is also called "yellow-bellied trogon" it is not the only trogon with a yellow belly. It breeds in lowlands from Honduras south to western Ecuador and northern Argentina.

23-3-2017 SAN GERARDO DE DOTA COSTA RICA - MENELAUS MORPHO (Morpho menelaus)


The Menelaus blue morpho (Morpho menelaus) is one of thirty species of butterfly in the subfamily Morphinae. Its wingspan is approximately 12 cm (4.7"), and its dorsal forewings and hindwings are a bright, iridescent blue edged with black, while the ventral surfaces are brown. Its iridescent wings are an area of interest in research because of their unique microstructure. Due to its characteristic blue color, Morpho menelaus is considered valuable among collectors and was widely hunted in the 20th century.


This neotropical butterfly is found in Central and South America, including the Cerrado which is a vast tropical savanna in Brazil. Other locations include Mexico and Venezuela. Ancestors of the Morpho menelaus butterfly may have been distributed in the Andean regions. Morpho menelaus is one of the six species of Morpho in Costa Rica. The genus of Morpho is present in regions beginning in Mexico and throughout South America, except Chile. Moreover, the Morpho menelaus struggle to survive in the northern Pacific area of Costa Rica since they can’t tolerate such dry conditions. They also need habitats in old growth forests with proper differentiation between the understories and canopies (Murillo-Hiller & Canet, 2018).

23-3-2017 SAN GERARDO DE DOTA, COSTA RICA - GOLDEN BROWED CHLOROPHONIA (Chlorophonia callophrys)


The golden-browed chlorophonia (Chlorophonia callophrys) is a species of bird in the family Fringillidae. It is found in Costa Rica and Panama. It is uncommon in subtropical or tropical moist montane forest above 750 m (2,460 ft) elevation.

In Costa Rica, its local common name is the rualdo. There is a legend of how this bird used to have a wonderful singing voice, but offered that to the volcano Poás to prevent a young woman from having to be sacrificed, thus keeping the volcano from erupting.


A brightly coloured bird, the golden-browed chlorophonia is distinctive within its range. The male is bright green above and yellow below, with a wide golden-yellow eyebrow stripe and a violet-blue cap. It has a narrow blue eye ring and a thin blue line extending from its nape to its breast. The female is similar, but without the golden brown and yellow breast; these are both replaced with green. They average 13 cm (5.1 in) in length.

It has a soft whistling call: wheeeeuuu.