Search results
Results From The WOW.Com Content Network
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 .
Hooded crow (Corvus cornix) in flight Jungle crow (Corvus macrorhynchos) scavenging on a dead shark at a beach in Kumamoto, Japan. Medium-large species are ascribed to the genus, ranging from 34 cm (13 in) of some small Mexican species to 60–70 cm (24–28 in) of the large common raven and thick-billed raven, which together with the lyrebird represent the larger passerines.
On the Falkland Islands the striated caracara breeds between late October and January. Its nest is built of twigs and grass on the ground, under tussoc grass clumps, or on cliff ledges. It usually nests in loose colonies with nests sometimes as little as 7 m (20 ft) apart, and there is some evidence of cooperative breeding. The clutch size is ...
Rooks nest in large, noisy colonies consisting of multiple nests, often untidily crammed into a close group of treetops called a rookery. The word might also be linked to the slang expression to rook (meaning to cheat or steal), a verb well established in the 16th century and associated with the supposedly thieving nature of the rook bird.
Bird's nest in grass. Nesting behavior is an instinct in animals during reproduction where they prepare a place with optimal conditions to nurture their offspring. [1] The nesting place provides protection against predators and competitors that mean to exploit or kill offspring. [2]
The forest raven lives in a wide variety of habitats in Tasmania but is restricted to more closed forest on mainland Australia. Breeding takes place in spring and summer, occurring later in Tasmania than in New South Wales. The nest is a bowl-shaped structure of sticks sited high in a tree.