Bence Mate / Male Black grouse (Tetrao tetrix) calling, Finland

Bence Mate / Common gull {Larus canus} silhouette at sunset, Runde, Norway

John Cancalosi / Rufous Tailed Hummingbird (Amazilia tzacatl) calling. Costa Rica.

David Tipling / Oilbird (Steatornis caripensis) in cave, Ecuador South America

Konrad Wothe / Rufous collared Sparrow (Zonotrichia capensis) singing, Costa Rica

Konrad Wothe / Common starling singing (Sturnus vulgaris) Bulgaria, May

Konrad Wothe / Common roller (Coracias garrulus) calling, Bulgaria, May

Mike Read / Fiordland crested penguin (Eudyptes pachyrhynchus) displaying on rocky shore, New Zealand

Mike Read / Fiordland crested penguin (Eudyptes pachyrhynchus) displaying on rocky shore, New Zealand

Tim Laman / Green Catbird (Ailuroedus crassirostris maculosus) calling. Rainforest of the Paluma Range National Park, Queensland, Australia, Sept 2008

Tim Laman / Swallow-tailed gull (Larus / Creagrus furcatus) pair at nest. Santa Cruz Island, Galapagos, June

John Cancalosi / Adult Yellow-footed gull (Larus livens) calling, Sonora, Mexico