Thursday, 8 June 2017
Wednesday, 7 June 2017
7-6-2017 VILLALONGA RESERVOIR, VALENCIA - GREY HERON (Ardea cinerea)
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Grey herons occur in most parts of Europe, Asia, and Africa. Over much of their range, these birds are resident, but populations from the more northerly parts of Europe migrate southwards; some remain in Central and Southern Europe, and others travel on to Africa south of the Sahara Desert. Grey herons can be found anywhere with suitable watery habitats that can supply their food. Although most common in the lowlands, they also occur in mountain tarns, lakes, reservoirs, large and small rivers, marshes, ponds, ditches, flooded areas, coastal lagoons, estuaries, and seashore. They sometimes forage away from water in the pasture, and can even be found in desert areas, hunting for beetles and lizards.
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Grey herons are social birds; they may feed alone or in groups and at night they roost in trees or on cliffs and tend to be gregarious. During the breeding season, they nest in big colonies. Grey herons usually hunt around dawn and dusk but they may also be active at other times of the day. They often perch in trees, but spend much time on the ground, striding about or standing still for long periods with an upright stance, often on a single leg. The main call of Grey herons is a loud croaking "fraaank", but a variety of guttural and raucous noises is heard at the breeding colony. A loud, harsh "schaah" is used by the male in driving other birds from the vicinity of the nest, and a soft "gogogo" expresses anxiety, as when a predator is nearby or a human walks past the colony. The chicks utter loud chattering or ticking noises.
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Grey herons are the largest birds most of us ever see in our garden: the wing span is around 6ft.
Despite their size, they are surprisingly light, weighing on average only half as much as a greylag goose.
The old English name for a heron was hragra; other names now largely fallen into disuse include harn, hernser and hernshaw. Heron comes from the French, for the French name is héron céndre.
In medieval times the heron was a favourite quarry of falconers who valued its great flying skills and ability to evade the falcon's stoops.
Roast herons were also popular at medieval banquets: the young birds, called branchers, were thought to be the best to eat.
The fat of a heron killed at full moon was once believed to be a cure for rheumatism.
Herons are sociable birds when nesting, invariably nesting in long-established heronries.
Most heronries are in trees, with the majority of nests at least 25m above the ground. However, reed-bed heronries are not unusual, and they will also nest on cliffs, bushes, sometimes even on buildings of bridges.
Heronries can reach a prodigious size: one at Great Snowden's Wood, near Brede in Sussex, contained around 400 nests in 1866.
The biggest heronry in Britain is currently at Northward Hill in Kent, an RSPB reserve. Numbers here have peaked at over 200 nests, but the current total is around 150.
7-6-2017 MONTE CORONA, VALENCIA - HOUSE SPARROW (MALE) (Passer domesticus)
The house sparrow (Passer domesticus) is a member of the sparrow family Passeridae. This small bird typically measures around 16 cm (6.3 in) in length and weighs between 24–39.5 g (0.85–1.39 oz). The species exhibits sexual dimorphism, with females and young birds displaying pale brown and grey plumage, while males are characterized by more vibrant black, white, and brown markings.
Males can be identified by their bright black, white, and brown markings, with a distinctive black bib, white cheeks, and a grey crown. Females lack the striking head patterns of males and are predominantly buffish with softer coloration. Juveniles resemble adult females but are generally paler with less defined markings.
The house sparrow is highly adaptable and can thrive in both urban and rural environments. It is commonly found in close association with human habitation and avoids dense forests, grasslands, polar regions, and deserts far from human development.
Native to Europe, the Mediterranean Basin, and much of Asia, the house sparrow has been introduced to various regions worldwide, including parts of Australasia, Africa, and the Americas, making it one of the most widely distributed wild birds.
House sparrows are social birds, often seen in flocks. They exhibit a range of behaviors, including dust or water bathing and communal roosting. Males are known to be territorial around their nesting sites.
The house sparrow's vocalizations are predominantly variations of a simple chirping call. Males may sing or give an "ecstatic call" during the breeding season, and the species uses a variety of calls for different social interactions.
House sparrows are generally monogamous and may mate for life. They can breed in the season following their hatching and often produce multiple clutches per year, with each clutch containing up to five eggs. Nest sites are varied, with a preference for cavities.
Tuesday, 6 June 2017
6-6-2017 GANDIA, VALENCIA - EUROPEAN SERIN (MALE) (Serinus serinus)
The European serin, or simply the serin (Serinus serinus), is a diminutive member of the finch family, Fringillidae. This sprightly bird is the smallest within its family, closely related to the Atlantic canary. It is characterized by its short tail and a length that spans a mere 11 to 12 centimeters. The serin's plumage is a tapestry of nature's palette, with upper parts dappled in dark-streaked greyish green and a conspicuous yellow rump. The underparts are a canvas of yellow breast and white belly, both adorned with heavy streaks.
When attempting to identify the European serin, look for the male's radiant yellow face and breast, which stand out against the greenish backdrop of its feathers. The male also boasts yellow wing bars and yellow tail sides, which can be quite helpful in distinguishing it from similar species. Both sexes share a buzzing trill of a song that resonates through their Mediterranean habitats.
The European serin is partial to open woodland and cultivated areas, often with a sprinkling of conifers. These environments provide the perfect backdrop for breeding and foraging.
This species has a breeding range that extends across southern and central Europe and into North Africa. Populations along the southern and Atlantic coasts tend to be resident, while those in the north are migratory, seeking warmer climates in southern Europe during the winter months.
Outside of the breeding season, the European serin is a sociable creature, forming flocks that may sometimes mingle with other finch species. It is an active and often conspicuous bird, its presence easily announced by its distinctive trill.
The serin's song is a distinctive buzzing trill, a sound that becomes part of the ambient music in regions where these birds are common.
The European serin weaves its nest within the shelter of a shrub or tree, where it lays a clutch of 3 to 5 eggs. The chosen breeding habitats are often areas of open woodland and cultivation, with a preference for some conifers.
The diet of the European serin is predominantly seeds, but it does not shy away from including insects during the breeding season, providing essential protein for its young.
Conservation status
The IUCN Red List categorizes the European serin as Least Concern, indicating that, for now, this species does not face any imminent threats to its survival.
6-6-2017 MONTE CORONA, VALENCIA - GROUND BUG (LYGAEUS SAXITALIS)
Spilostethus saxatilis is a species of bugs belonging to the family Lygaeidae, subfamily Lygaeinae.
This species can be found in the Euro-Mediterranean-Turanian Region, with a more northern distribution relative to Spilostethus pandurus,[citation needed] at least as far east as Iran.
It is present in most of Europe (Albania, Austria, Bulgaria, Croatia, Czech Republic, France, Germany, Greece, Hungary, Italy, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Slovenia, Spain, Switzerland, Turkey, Ukraine),[2] and in the Oriental realm.
These bugs prefer warm, dry open areas, meadows and fields. They can also be seen on the rocks (hence the species name saxatilis, which is derived from the Latin word saxum, meaning rock).
Spilostethus saxatilis can reach a length of 8.5–12.5 millimetres (0.33–0.49 in). Bodies of these bugs are characterized by black and red markings of different shapes. Pronotum is red, with two broad, irregularly shaped longitudinal black stripes. The hemilytra have black and red markings, while the membrane is black, without white spot. The outer edge of the corium is black. The connexivum is alternately red and black colored. Antennae and legs are black.
These polyphagous bugs feed on seeds and juices of various plants, especially Aspleniaceae, Asteraceae and Apiaceae. Spilostethus saxatilis is a univoltine species. The mating takes place in May and June. The new adult generation will appear in August. Adults overwinter.
5-6-2017 MONTE CORONA, VALENCIA - SEED BUG (Spilostethus furcula)
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Spilostethus furcula is a species of seed bug in the family Lygaeidae, found in Africa, Europe, and the Middle East.
Adults can exceed one centimetre in length. The head is small, with a pair of bulging eyes on both sides. Long antennae with four segments, pronotum "kind of shield located between the head and the abdomen, red with black spots, the abdomen is covered by hemyelytra "chitinous wings whose function is to protect the true wings. The true wings are membranous and greyish or brown. The Scutellum "triangular piece located below the pronotum, black in colour and the abdomen with a zebra-like margin of red and black, these being its main characteristics.
Monday, 5 June 2017
5-6-2017 GANDIA MARJAL, VALENCIA - EURASIAN COOT (JUVENILE) (Fulica atra)
The Eurasian coot, Fulica atra, also known as the common coot or Australian coot, is a distinctive waterbird with a slaty-black body, a glossy black head, and a striking white bill topped with a white frontal shield. This bird is a member of the Rallidae family, which includes rails and crakes. Both sexes exhibit similar plumage, making them indistinguishable in the field.
Adult Eurasian coots measure 36–38 cm in length with a wingspan of 70–80 cm. Males are slightly heavier than females, weighing around 890 g compared to the females' 750 g. The species is characterized by its white bill and frontal shield, which contrast sharply with its all-black body. Juveniles are paler with a whitish breast and lack the facial shield, which develops fully by one year of age.
The Eurasian coot is found on freshwater lakes and ponds and has adapted well to urban environments, often seen in city parks and gardens with water bodies.
This bird has a broad range across the Old World, including Europe, Asia, Australia, New Zealand, and parts of North Africa. It is a resident in milder regions but migrates south and west from much of Asia during winter.
The Eurasian coot is less secretive than many rails, often visible on open water or grasslands. It is territorial and aggressive during the breeding season, with both parents defending their territory. In non-breeding seasons, coots may form large flocks. They are reluctant flyers, preferring to run across water surfaces, and are known for bobbing their heads while swimming.
This species is known for its noisy demeanor, producing a variety of crackling, explosive, or trumpeting calls, which are often heard at night.
Coots build bulky, sometimes floating nests, concealed in vegetation or in the open. Both sexes construct the nest, with the male gathering materials. Clutches typically contain 6-10 buff-colored eggs speckled with black or dark brown. Both parents incubate the eggs, which hatch after 21-24 days. Chicks are precocial and nidifugous, with distinctive orange-red tips on their down.
Omnivorous in nature, the Eurasian coot consumes small live prey, including other birds' eggs, as well as algae, vegetation, seeds, and fruit. It employs various feeding techniques, both on land and in water.
The Eurasian coot is classified as Least Concern by the IUCN and is protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA).
22-3-2017 TROGON LODGE, COSTA RICA - VOLCANO HUMMINGBIRD (Selasphorus flammula)
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The Volcano Hummingbird, scientifically known as Selasphorus flammula, is a diminutive and vibrant member of the "bee hummingbirds" tribe Mellisugini. This species graces the highlands of Costa Rica and Panama with its presence and is notably featured on Costa Rica's 20 thousand colones bill.
Adult males of the Volcano Hummingbird are characterized by their bronze-green upperparts and striking mauve-purple gorget, with the rest of the underparts predominantly white. They possess rufous-edged black outer tail feathers, and their breast sides are tinged with buffy to pale cinnamon, speckled with green. Females, while also bronze-green above, have green central tail feathers with rufous bases, a black band near the end, and buffy to white tips. Their throats are whitish with dusky bronze speckles. Juveniles resemble adult females but have buffy fringes on their upperpart feathers.
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The Volcano Hummingbird (Selasphorus flammula) is a very small hummingbird which breeds only in the mountains of Costa Rica and Chiriqui, Panama. This tiny endemic bird inhabits open brushy areas, paramo, and edges of elfin forest at altitudes from 1850 m to the highest peaks. It is only 7.5 cm long. The male weighs 2.5 g and the female 2.8 g. The black bill is short and straight. The adult male Volcano Hummingbird has bronze-green upperparts and rufous-edged black outer tail feathers. The throat is grey-purple in the Talamanca range, red in the Poas-Barva mountains and pink-purple in the Irazú-Turrialba area, the rest of the underparts being white. The female is similar, but her throat is white with dusky spots. Young birds resemble the female but have buff fringes to the upperpart plumage.
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These hummingbirds inhabit semi-open to open high mountain slopes, thriving in environments such as páramo, second growth on landslide scars or ashfall areas, scrubby pastures, and the edges of elfin forest and taller forest.
The Volcano Hummingbird can be found across various high-elevation locations in Costa Rica and western Panama, with the nominate subspecies residing on Volcanoes Irazú and Turrialba in central Costa Rica.
During the breeding season, which spans from August or September to February, males establish small territories for courtship displays, while females construct nests of plant down and spider web adorned with moss and lichens. Post-breeding, some individuals may descend to lower elevations or migrate to adjacent mountains, allowing for subspecies intermingling.
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While foraging, the Volcano Hummingbird emits soft chip notes. Males produce a thin whistled 'teeeeeuu' and a twittering 'scolding' call during confrontations with other males. The male's tail feathers create a series of broad-frequency pulses during their dive display.
The female Volcano Hummingbird crafts a cup nest on the outermost end of a twig, typically between 1 and 5 meters above the ground, occasionally on a rootly drooping from an earth bank. The specifics of the incubation period and fledging time remain a mystery.
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The Volcano Hummingbird forages for nectar from a diverse array of small flowers and also consumes small arthropods, either caught on the wing or gleaned from foliage and spider webs.
The IUCN has classified the Volcano Hummingbird as Least Concern, with a fairly large range and a stable population estimated between 20,000 and 50,000 mature individuals. The species is found in protected areas and may even benefit from human activity, as it is more abundant in open areas than in forested ones.
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Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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