Vagrancy (biology)

For example, Siberian passerines which normally winter in Southeast Asia are commonly found in Northwest Europe, e.g. Arctic warblers in Britain.

Many isolated oceanic islands are home to species that are descended from landbirds blown out to sea, Hawaiian honeycreepers and Darwin's finches being prominent examples.

[citation needed][7] In mammals, vagrancy has been recorded for bats, pinniped seals, whales, manatees, belugas, cougars, and more.

Saltwater crocodiles are especially prone to vagrancy, with individuals occasionally being recorded in odd places including Fiji, Iwo Jima, and even the Sea of Japan.

Their definition was, "taxa whose presence within the New Zealand botanical region is naturally transitory... those which have failed to establish themselves significantly beyond their point of introduction through reproductive failure or for quite specific ecological reasons.".