tern or sternidae

animal animals arctic asia avian beach beak beautiful bills bird birding birds black blue british built cap coast common contrasting family fauna feather feeding fish flight fly flying forked grey gull head lake laridae legs lightly little narrow natural nature ocean ornithology outdoors pale plumage red rivers sea seabird seabirds seagull season shore short sky slender species spring sterna summer tails tern terns they water wetlands white wild wildlife wing wings worldwide