Common Terns (Sterna hirundo), in their breeding colony in June, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

common terns sterna hirundo breeding colony brownsea island poole harbour dorset england summer nature reserve birds wildlife nesting colony behavior migratory birds marine birds shorebirds natural habitat seabirds coastal ecology avian activity birdwatching ornithology conservation area island ecology british wildlife summer breeding terns marshland feeding behavior environmental habitat wildlife observation biodiversity coastal birds animal behavior population dynamics avian migration wildlife sanctuary ecological conservation nesting sites bird conservation habitat preservation coastal reserve british isles grassland colony dynamics breeding season wildlife refuge animal habitat landscape fauna