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Peregrine Falcons nesting at University of California, Berkeley. Cal Falcons is a website and social media community featuring three live streaming webcams trained on a peregrine falcon nest site atop Sather Tower at the University of California, Berkeley. Cal Falcons is known for its extensive social media presence and following. [1]
The peregrine falcon (Falco peregrinus), also known simply as the peregrine, [3] 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.
A large falcon, it preys on birds and bats. [2] Most likely either the lanner or peregrine falcon was the sacred species of falcon to the ancient Egyptians, [3] and some ancient Egyptian deities, like Ra and Horus, were often represented as a man with the head of a lanner falcon.
The organization's first recovery effort focused on the peregrine falcon, which was facing extinction due to the widespread use of the chemical DDT. [1] [3] The peregrine falcon was removed from the U.S. Endangered Species list in 1999 at an international celebration held in Boise. [6] [7] [8] [9]
Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...
The shaheen falcon (Falco peregrinus peregrinator) is a non-migratory subspecies of the peregrine falcon found in southern Asia from India and Sri Lanka east to southeastern China. [ 2 ] [ 3 ] It has also been described as a migratory subspecies. [ 4 ]
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Peale's falcon concentrates on hunting Alcids, often nesting very near seabird colonies for this purpose.However, this is not necessary for a successful eyrie.A study on Amchitka Island from 1968 to 1973 found that an average of 18.6 eyries on the island were in no close proximity to seabird colonies, as no sizeable colonies existed on the island. [3]