"Common Tern (Sterna hirundo) in flight, silhouette, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo), in flight, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Hands holding a chick, Common Tern (Sterna hirundo), East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo), chick, in a biotope, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Two Arctic Terns (Sterna paradisaea), East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo) in flight, silhouetted against the sunset, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo), in flight with fish in its beak, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"

"Little Tern (Sternula albifrons), chick hatching, Minsener Oog, East Frisian Islands, Lower Saxony Wadden Sea National Park, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo) hunting, Minsener Oog island, East Frisian Islands, Lower Saxony Wadden Sea, Lower Saxony, Germany, Europe"

"Little Tern (Sternula albifrons), courtship with feeding in flight, Minsener Oog, East Frisian Islands, Lower Saxony Wadden Sea National Park, Lower Saxony, Germany, Europe"

"Little Tern (Sternula albifrons), courtship with fish, offering copulation by the female, Minsener Oog, East Frisian Islands, Lower Saxony Wadden Sea National Park, Lower Saxony, Germany, Europe"

"Common Tern (Sterna hirundo) with prey against the light at sunset, Minsener Oog, East Frisian Islands, Lower Saxony Wadden Sea National Park, Lower Saxony, Germany, Europe"

"Little Tern (Sterna albifrons), inner-species aggression, East Frisian Islands, East Frisia, Lower Saxony, Germany, Europe"