Long-call of black-tailed gull

Duet of long calls in black-tailed gull

Effect of a long-call

Greeting ceremony of black-tailed gull

Pecking of black-tailed gull: Dummy experiment 1

Pecking of black-tailed gull: Dummy experiment ３

Pecking of black-tailed gull: Dummy experiment 2

Pecking of black-tailed gull: Dummy experiment ４

Risk with performing long-call

Threatening behavior of a black-tailed gull toward a grey heron

A black-tailed gull, eating a dead crucian carp

A black-tailed gull eating a baby red-eared slider

Black-tailed gulls mating

Courtship feeding in a couple of black-tailed gulls

A couple of black-tailed gulls choking as a courtship behavior

Juvenile Black-tailed Gull

Black-tailed Gull, preening

Black-tailed Gull, drinking water

Black-tailed gulls, collecting nesting materials

Black-tailed gulls flocking around the colony

Black-tailed gulls, catching and eating adult chironomids

Advertisement call of Kajika Frog (Buergeria buergeri)

Long-tailed Cat

Long calls after fighting

Long-tailed Tit perched on the wire, call