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Breeding adult. Photo: Tom Benson/Flickr (CC BY NC ND 2.0)
Xema sabini
| Conservation status | Remote summer range and sea-going habits probably help ensure survival. Like other seabirds, could be vulnerable to pollution in coastal waters during migration or winter. |
|---|---|
| Family | Gulls and Terns |
| Habitat | Ocean; nests on tundra. During summer on low, marshy tundra close to coast, especially areas with many ponds and shallow tidal flats. In migration and winter mostly at sea, typically a few miles offshore over continental shelf; concentrates in winter where there are upwellings of cold water near coastlines south of the Equator. |
During migration and winter (mostly at sea), forages by dipping to surface of water in flight, or by picking up items near surface while swimming. During summer, also does much feeding while walking on tidal flats or in marshes. In shallow water may spin in circles, stirring up items from bottom.
2, sometimes 1-3. Olive with darker olive-brown spots. Incubation is by both sexes, 23-25 days. Parents may defend nest by dive-bombing intruders, or may try to lead predators away with distraction display. Young: Shortly after young hatch, parents lead them to area near water; young mostly feed themselves. Age at first flight unknown.
Shortly after young hatch, parents lead them to area near water; young mostly feed themselves. Age at first flight unknown.
Insects, fish, crustaceans. Diet in summer mostly insects and aquatic insect larvae, also some crustaceans, mollusks, marine worms, small fish. Winter diet not well known, includes small fish, crustaceans.
Male on territory lures female by giving long call, arching neck, bowing. In courtship, male may feed female. Nest site is on open ground, in small colony, typically close to water. Usually located in or near a colony of Arctic Terns. Nest is a shallow depression, either unlined or with a lining of seaweed, moss, feathers.
Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future.
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