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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.
These opportunistic mammals tend to feed and dive in shallow waters at night, when their prey are swimming near the surface. Fur seals occasionally gang up and evict sharks. [4] South American fur seals exhibit a different diet; adults feed almost exclusively on anchovies, while juveniles feed on demersal fish, most likely due to availability.
In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans , an essay on hunting published in 1486 and attributed to Juliana Berners . [ 1 ]
Hawaiian monk seals grow to be 6-7 feet long, weigh 400-600 pounds, and can live more than 30 years. Males and females are generally the same size — the only way to tell them apart is to look at ...
In a wildlife camera set up last year near the seal rookery at MacKerricher State Park, ecologist Frankie Gerraty captured a coyote decapitating its prey, confirming many researchers' hypotheses ...
The commercial fur trade was accelerated in 1786, when Gavriil Pribylov discovered St. George Island, a key rookery of the seals. An estimated 2.5 million seals were killed from 1786 to 1867. This trade led to a decline in fur seal numbers. Restrictions were first placed on fur seal harvest on the Pribilof Islands by the Russians in 1834.
Nesting colonies are very common among seabirds on cliffs and islands. Nearly 95% of seabirds are colonial, [3] leading to the usage, seabird colony, sometimes called a rookery. Many species of terns nest in colonies on the ground. Herons, egrets, storks, and other large waterfowl also nest communally in what are called heronries.
Butter Pecan, a grey male seal, was rescued by the Seacoast Science Center's Marine Mammal Rescue team from Wallis Sands Beach in Rye on Feb. 19.