Adult Eurasian oystercatcher (Haematopus ostralegus ostralegus) in full breeding plumage at Isfjardardjup, Iceland

eurasian oystercatcher haematopus ostralegus breeding plumage calling rocky shore iceland shorebird wildlife nature birdwatching coastal habitat animal behavior orange beak outdoor fauna avian migratory bird wetlands marine environment mating display spring summer natural opportunity color contrast detail rock nesting season conservation birding ornithology watching life ecological balance protection colors ecosystem