Arctic tern (Sterna paradisaea) -- This bird has a circumpolar breeding distribution covering the Arctic and sub-Arctic regions of Europe, Asia, and North America (as far south as Brittany and Massachusetts). The Arctic tern is famous for its migration; it flies from its Arctic breeding grounds to the Antarctic and back again each year, the shortest distance between these areas being 19,000 km (12,000 mi).
Least Auklet - breed on the islands of Alaska and Siberia, and spend the winter close to the edge of the ice sheet. They are the most abundant seabird in North America, and one of the most abundant in the world, with a population of around nine million birds.
Relict Gull (Ichthyaetus relictus) - photo by Jon Hornbuckle; Breeding birds have black hoods (including napes) with grey-brown foreheads, and broad, white, half-moon colouring behind, below, and above their eyes. Their legs are orange and their bills scarlet. They are found in Mongolia, Russia, Kazakhstan, and China, and some migrate to South Korea. They nest in colonies on islands in saltwater lakes, and are considered vulnerable for extinction.