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The osprey and owls are the only raptors whose outer toe is reversible, allowing them to grasp their prey with two toes in front and two behind. This is particularly helpful when they grab slippery fish. [26] The osprey is 0.9–2.1 kg (2.0–4.6 lb) in weight and 50–66 cm (20–26 in) in length with a 127–180 cm (50–71 in) wingspan.
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The order Falconiformes (/ f æ l ˈ k ɒ n ɪ ˌ f ɔːr m iː z /) is represented by the extant family Falconidae (falcons and caracaras) and a handful of enigmatic Paleogene species. . Traditionally, the other bird of prey families Cathartidae (New World vultures and condors), Sagittariidae (secretarybird), Pandionidae (ospreys), Accipitridae (hawks) were classified in Falconifo
The osprey is usually placed in a separate family (Pandionidae), as is the secretary bird (Sagittariidae), and the New World vultures are also usually now regarded as a separate family or order. Karyotype data [3] [4] [5] indicate the accipitrids analysed are indeed a distinct monophyletic group.
The snowshoe-like foot of the willow ptarmigan is an adaptation for walking on snow. [1] Because avian forelimbs are wings, many forelimb functions are performed by the bill and hindlimbs. [10] It has been proposed that the hindlimbs are important in flight as accelerators when taking-off.
The eastern osprey (Pandion haliaetus cristatus) is a diurnal, fish-eating bird of prey. They live in Oceania at coastal regions of the Australian continent, the Indonesian islands, New Guinea , and the Philippines .
János Hugo Bruno "Hans" Selye CC (/ ˈ s ɛ l j eɪ / [dubious – discuss]; Hungarian: Selye János Hungarian pronunciation:; January 26, 1907 – October 16, 1982) was a pioneering Hungarian-Canadian endocrinologist who conducted important scientific work on the hypothetical non-specific response of an organism to stressors.