Bird colony  From Wikipedia, the free encyclopedia Jump to:
navigation, search The Bird Island Nature Reserve in Lambert's
Bay Western Cape, South Africa  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.
Colonial nesting birds include seabirds such as auks and
albatrosses; wetland species such as herons; and a few
passerines such as weaverbirds, certain blackbirds, and some
swallows. A group of birds congregating for rest is called a
communal roost. Evidence of colonial nesting has been found in
non-neornithine birds (Enantiornithes), in sediments from the
Late Cretaceous (Maastrichtian) of Romania.[1]  Variations on
colonial nesting in birds[edit]  Approximately 13% of all bird
species nest colonially.[2] Nesting colonies are very common
among seabirds on cliffs and islands. Nearly 95% o