Friday, 17 April 2020
Thursday, 16 April 2020
16-4-2021 GREAT SPIRIT BLUFF CAM, MINNESOTA - NORTH AMERICAN PEREGRINE FALCON (Falco peregrinus ssp. anatum)
The peregrine falcon (Falco peregrinus), also known simply as the peregrine, and historically as the duck hawk in North America, is a cosmopolitan bird of prey (raptor) in the family Falconidae. A large, crow-sized falcon, it has a blue-grey back, barred white underparts, and a black head. The peregrine is renowned for its speed. It can reach over 320 km/h (200 mph) during its characteristic hunting stoop (high-speed dive), making it the fastest member of the animal kingdom. According to a National Geographic TV program, the highest measured speed of a peregrine falcon is 389 km/h (242 mph). As is typical for bird-eating (avivore) raptors, peregrine falcons are sexually dimorphic, with females being considerably larger than males.
The peregrine's breeding range includes land regions from the Arctic tundra to the tropics. It can be found nearly everywhere on Earth, except extreme polar regions, very high mountains, and most tropical rainforests; the only major ice-free landmass from which it is entirely absent is New Zealand. This makes it the world's most widespread raptorand one of the most widely found bird species. In fact, the only land-based bird species found over a larger geographic area is not always naturally occurring, but one widely introduced by humans, the rock pigeon, which in turn now supports many peregrine populations as a prey species.
The peregrine is a highly successful example of urban wildlife in much of its range, taking advantage of tall buildings as nest sites and an abundance of prey such as pigeons and ducks. Both the English and scientific names of this species mean "wandering falcon", referring to the migratory habits of many northern populations. Experts recognize 17 to 19 subspecies, which vary in appearance and range; disagreement exists over whether the distinctive Barbary falcon is represented by two subspecies of Falco peregrinus or is a separate species, F. pelegrinoides. The two species' divergence is relatively recent, during the time of the last ice age, therefore the genetic differential between them (and also the difference in their appearance) is relatively tiny. They are only about 0.6–0.8% genetically differentiated.
Wednesday, 15 April 2020
25-11-2015 JURONG, SINGAPORE - COCONUT LORIKEET (richoglossus haematodus)
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Coconut Lorikeets are extremely social parrots. They form small to medium-sized flocks that roost and forage together. They are highly vocal and engage in constant communication with their flock members.
Their bright green and red feathers blend in well with the flowering plants they feed upon, but Lorikeet safety also comes from having their flock on the lookout for predators.
These lorikeets have a specialized diet primarily consisting of nectar, pollen, fruits, and flower buds. Their tongue is equipped with unique brush-like bristles that aid in extracting nectar from flowers and licking pollen from plants. They also have a simplified digestive system that helps them quickly extract sugar from the nectar they eat.
During the breeding season, male Coconut Lorikeets display elaborate courtship rituals to attract females. Once a pair has formed a bond, they search for suitable nesting sites. Their nests are typically constructed in tree hollows. The female lays 1 to 3 eggs, which both parents take turns incubating for 24 to 28 days. Chicks then stay in the nest for about 10 weeks until they are old enough to join the flock.
Coconut Lorikeets are considered Least Concern on the IUCN Red List due to their large area. They have even become an invasive species in some areas, where they compete aggressively for tree hollows. Globally their population is decreasing.
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Trichoglossus haematodus is found in eastern Indonesia, on Buru, Seram, Misool, Waigeo, Numfoor, Yapen and the Aru Islands, in Indonesia and Papua New Guinea on New Guinea, in the Bismarck Archipelago, the Solomon Islands, Vanuatu and New Caledonia.
The species occupies a wide range of lowland and wooded hill habitats, including mangroves, rainforest, nypa forest, swamps, savanna and woodland. It also occupies human-modified areas including coconut plantations, gardens, agricultural land and disturbed forest. It is found from sea level up to as high as 2,440 m (8,010 ft); this upper altitude level varies by location.
Tuesday, 14 April 2020
8-5-2017 ARCOS DE FRONTERA, ANDALUSIA - WHITE FACED OWL (Genus Ptilopsis)
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Ptilopsis is a genus of typical owls, or true owls, in the family Strigidae, that inhabits Africa. Its members are Northern and Southern White faced owls.
The northern white-faced owl is a species of owl in the family Strigidae. The southern white-faced owl was formerly included in this species and the two were known as the white-faced scops-owl. It is found in a band across Africa between the Sahara and the Equator.
Monday, 13 April 2020
8-5-2017 SEVILLE, ANDALUCIA - 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.
An opportunistic feeder, the house sparrow's diet consists mainly of seeds from grains and weeds, but it also consumes insects and other invertebrates, especially during the breeding season when feeding young.
Despite its widespread distribution and abundance, the house sparrow has experienced declines in some areas. However, it is currently listed as Least Concern on the IUCN Red List.
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