seabird diversity during migration season in mexico.

animal avian aviary background beach beak beautiful bill bird birding birds birdwatching black blue brown cormoran duck erythrorhynchos fauna feather flock freedom group gull mexico migration natural nature niger ocean oceanbird onocrotalus orange ornithology outdoor pelecanus pelican pelicans plumage red reflection rest sand sandvicensis sandwich sea seabird seagull seagulls share shore skimmer skimmers species strip swift swimming tern thalasseus tropical wading water waterbird white whitepelican wild wildlife wing yellow