black guillemot swimming arround a pair in circle

alcid american arctic atlantic benthic bill bird birds black circle cliffs coast coastal colony crustaceans diving epphus feathers feeding fish flatfish flight floor grille guillemot gull high invertebrates irish iucn list love migrate migratory nesting north ocean pair pairs plumage red rocky roost sea seabird seaside seaweed shores sounds summer tystie water wave wing wings wingspan