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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 .
Emperor penguins with chicks. Taylor Rookery is an emperor penguin breeding colony in Antarctica. It is the larger of the two known entirely land-based colonies of the species, most of which are situated on sea ice. [1] It is important because it is probably the largest colony of the species to occur on land and has been regularly monitored. [2]
Although many breed in large, well-defined colonies, the penguins also occur in scattered locations along long stretches of coastline. [1] In New Zealand numerous beaches, bays and coves are host to penguin colonies. Colony sizes may range from thousands to just a few nests, with some penguins ranging into urban areas. The total population is ...
Colony-nesting birds often show synchrony in their breeding, meaning that chicks all hatch at once, with the implication that any predator coming along at that time would find more prey items than it could possibly eat. [2] [5] Common murre colony (Farallon Islands). What exactly constitutes a colony is a matter of definition.
A small, freely-moving projection on the anterior edge of the wing of modern birds (and a few non-avian dinosaurs)—a bird's "thumb"—the word is Latin and means 'winglet'; it is the diminutive of ala, meaning 'wing'. Alula typically bear three to five small flight feathers, with the exact number depending on the species.
Auster Rookery is an Emperor penguin rookery on sea-ice, sheltered by grounded icebergs, 5 kilometres (2.7 nmi) east of the Auster Islands, and about 51 kilometres (28 nmi) ENE of Mawson Station in Antarctica.
A royal penguin rookery on Macquarie Island. The flora has taxonomic affinities with other subantarctic islands, especially those south of New Zealand. Plants rarely grow over 1 metre (3 ft 3 in) in height, though the tussock-forming grass Poa foliosa can grow up to 2 metres (6 ft 7 in) tall in sheltered areas.
Cape Adare is the site of the largest Adélie penguin rookery in the world. [9] The only study of this particular colony was done by George Murray Levick , [ 9 ] who was a member of the 1910–13 Scott Antarctic Expedition and observed it for an entire breeding cycle in 1911 and 1912. [ 10 ]