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Migration is the regular seasonal movement, often north and south, undertaken by many species of birds. Migration is marked by its annual seasonality and movement between breeding and non-breeding areas. [16] Nonmigratory bird movements include those made in response to environmental changes including in food availability, habitat, or weather.
Like many birds, seabirds often migrate after the breeding season. Of these, the trip taken by the Arctic tern is the farthest of any bird, crossing the equator in order to spend the Austral summer in Antarctica. Other species also undertake trans-equatorial trips, both from the north to the south, and from south to north.
A 2006 study found individual tagged sooty shearwaters from New Zealand migrating 64,000 km (40,000 mi) a year, [2] which gave them the then longest known animal migration ever recorded electronically (though subsequently greatly exceeded by a tagged arctic tern migrating 96,000 km (60,000 mi) [3]).
The Antarctic tern does not migrate like the Arctic tern does, but it can still be found on a very large range. This tern species is actually more closely related to the South American tern. [2] Gulls, skuas and jaegers are the primary predators of the bird's eggs and young. The Antarctic tern can be further divided into six subspecies.
All little auks migrate south by winter into northern areas of the North Atlantic. The species is also commonly found in the Norwegian Sea. [22] Late autumn storms may carry them south of their normal wintering areas, or into the North Sea, and can cause wrecks of these birds, along with other seabirds, at sea and occasionally on land.
Common tern Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Charadriiformes Family: Laridae Genus: Sterna Species: S. hirundo Binomial name Sterna hirundo Linnaeus, 1758 Breeding Resident Non-breeding Passage Vagrant (seasonality uncertain) Synonyms Sterna fluviatilis (Naumann, 1839) Twisted head The ...
Adult near Burrow on Bruny Island. The photograph was taken at night. Fledgling, Austins Ferry, Tasmania, Australia. The short-tailed shearwater or slender-billed shearwater (Ardenna tenuirostris; formerly Puffinus tenuirostris), also called yolla or moonbird, and commonly known as the muttonbird in Australia, is the most abundant seabird species in Australian waters, and is one of the few ...
The reserve consists of a plateau with cliffs that overlook Torrey Pines State Beach and a lagoon that is vital to migrating seabirds. Many different kinds of wildlife and flora are found within the reserve, including bobcat, fox, skunk, raccoon, coyote, rabbit, cacti, coastal chaparral, and the rare Torrey pine.