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Non-breeding adult wintering in California. American white pelicans nest in colonies of several hundred pairs on islands in remote brackish and freshwater lakes of inland North America. The most northerly nesting colony can be found on islands in the rapids of the Slave River between Fort Fitzgerald, Alberta, and Fort Smith, Northwest Territories.
Many large breeding colonies have been recorded and several have disappeared over time. In June 1906, C E Rhenius visited a colony in Kundakulam in Tirunelveli district where the villages considered the birds semi-sacred. [9] The same colony was revisited in 1944, and was found to have about 10 nests of pelicans and nearly 200 nests of painted ...
The breeding colony at Lake Rukwa, Tanzania is the largest known breeding colony in Africa, followed by the Lake Shala, Ethiopia colony which is probably of crucial importance to the species in Africa. [20] The African population of about 75,000 pairs of the great white pelican is resident. [21]
A brown pelican opening mouth and inflating air sac to display tongue and some inner bill anatomy American white pelican with knob which develops on bill before the breeding season An adult brown pelican with a chick in a nest in Chesapeake Bay, Maryland, US: This species will nest on the ground when no suitable trees are available. [49]
A bird colony is a large congregation of individuals of one or more species of bird that nest or roost in proximity at a particular location. Many kinds of birds are known to congregate in groups of varying size; a congregation of nesting birds is called a breeding colony.
Renesting may occur if eggs are lost from the nest early in the breeding season. [53] There are usually two to three, or sometimes even four, oval eggs in a clutch, and only one brood is raised per year. [24] [56] The egg is chalky white, [54] and can measure about 76 mm (3.0 in) in length and 51 mm (2.0 in) in width. [24]
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 .
[15] [17] In the largest remnant colony, located in Greece, the preferred prey is reportedly the native Alburnus belvica. [18] The Dalmatian pelican requires around 1,200 g (2.6 lb) of fish per day and can take locally abundant smaller fish such as gobies, but usually ignore them in favour of slightly larger fish.