juvenile black-headed gull and sandwich tern, salina nature reserve, malta, mediterranean

gull tern water autumn nature black-headed chroicocephalus thalasseus sandvicensis ridibundus sandwich fly winter animal bird action activity aggression avian background beak beautiful behaviour bill bird-watching black coast evict feather feet flight horizontal hover juvenile legs malta ocean outdoors perch plumage portrait red scream sea seagull two white wild wings wood