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A rook skull The rook is a very social bird; in the evenings they gather in large flocks, often in thousands. Rooks are highly gregarious birds and are generally seen in flocks of various sizes. Males and females pair-bond for life and pairs stay together within flocks.
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. [1] [2] [3] In colloquial English, they are known as the crow family or corvids.
A rookery is a colony breeding rooks, and more broadly a colony of several types of breeding animals, generally gregarious [1] birds. [ 2 ] Coming from the nesting habits of rooks, the term is used for corvids and the breeding grounds [ 3 ] of colony-forming seabirds , marine mammals ( true seals or sea lions ), and even some turtles .
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The spawn (eggs) of a clownfish. The black spots are the developing eyes. Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, to spawn refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is known as spawning. The vast majority of aquatic and ...
In most species, though, the male does most of the nest excavation and takes the night shift while incubating the eggs. A clutch usually consists of two to five round, white eggs. Since these birds are cavity nesters, their eggs do not need to be camouflaged and the white color helps the parents to see them in dim light.
The striated caracara or Forster's caracara (Phalcoboenus australis) is a Near Threatened bird of prey of the family Falconidae, the falcons and caracaras. [4] [1] It is found in Tierra del Fuego and the Falkland Islands. [5]
The gentoo penguin (/ ˈ dʒ ɛ n t uː / JEN-too) (Pygoscelis papua) is a penguin species (or possibly a species complex) in the genus Pygoscelis, most closely related to the Adélie penguin (P. adeliae) and the chinstrap penguin (P. antarcticus).