the black-headed gull (chroicocephalus ridibundus) romance dancing on the park trail.

black-headed gull chroicocephalus ridibundus romance dancing park trail breeding plumage springtime adult laughing ornithology environment standing black headed beak feather water animal nature bird shadow spring shadows trees parkway dark brown eyes white eye crescents frontal hood grayish-black official tokyo head-bobbing walking noisy bold red legs bill pale grey gulls background chocolate-brown birds larus feathers seashore birdwatching seabirds coast wild