Tundra birds | Bird Nest On The Ground | Aleutian Tern

Birds in tundra often make their nests on the ground, since there are often no trees available for nesting. Aleutian tern is one of these birds. This is a video about bird behavior in the nest. This is a ground nesting bird. You can see the bird entering and leaving the nest. A part of the video shows when the bird is alert and worried.
We also have a video showing these little eggs grown into beautiful chicks.

Aleutian tern, or Onychoprion aleutica has not been thoroughly studied yet. If its winter migratory range was completely unknown until the late 1980s; it is now known that many Aleutian terns spend the winter near the Equator in the western Pacific. The Aleutian tern breeds in wide-ranging coastal colonies only in Alaska and eastern Siberia. Although Alaskan and Siberian populations are not well monitored, both are thought to be in significant decline.
During breeding season, the colonies gather along Pacific coastlines of Alaska and Russia. More precisely, breeding colonies have been located along the coast of Chukchi Sea (western Alaska), on the Seward Peninsula and Yukon-Kuskokwim River Delta along the Alaska Peninsula, in the Aleutian Island, in the Kodiak Archipelago, on the Kenai Peninsula and Copper River delta, and along the Gulf of Alaska. The current worldwide minimum breeding population has been estimated at approximately 31 000 birds, with most colonies occurring in the Siberian region of Russia (25 602 birds in 89 colonies) and the remaining 18% occurring in Alaska (5 529 birds in 111 colonies). However, within the last decade, there have been reports of colony declines and disappearances at individual sites in Alaska.

This species is strongly migratory, and although the wintering range is poorly known, it is believed to lie off Indonesia and Malaysia. Small flocks of the species have been increasingly sighted in coastal areas around Hong Kong in spring and fall, around Singapore and Indonesia between October and April, and in coastal waters of Java, Bali and Sulawesi during December.

This particular bird was filmed on Sakhalin Island during an ecological expedition.

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