As a rule, these are large or medium-sized birds, with white or gray plumage, often with black markings on their heads or wings. One of the distinguishing features is a strong, slightly bent beak at the end, and well-developed swimming membranes on the legs. Some species have a red spot at the end of the lower part of the beak, which acts as a signal stimulus, encouraging parents to feed the chicks (hungry chicks touch this spot with their beak, thereby provoking a reflex of belching food in the parents).
Это же ведь инфа о чайках?,_,
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