Small seabird with long,
red legs and webbed feet, slender, pointed wings, black cap,
grey back and upperwings, white underparts
Wingspan 80 cm (31 inches)
Migrates all the way from the Arctic to Antarctic and back again every year. Male courts female by offering small fish in his beak. While flying long distance, the tern puts half of its brain to sleep while the other half remains alert and functioning. Scientists call this unihemispheric sleep. Nest is a hollow scooped in the sand.
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