Terry Whittaker / Red fox (Vulpes vulpes) cub on railway embankment with train passing behind, Kent, UK, July.

Luiz Claudio Marigo / Swallow wing(Chelidoptera tenebrosa) standing on ground, lowland Atlantic Rainforest, Estao Veracel Natural Private Heritage Reserve (RPPN Estao Veracel) municipality of Porto Seguro, Southern Bahia S...

Luiz Claudio Marigo / Swallow wing(Chelidoptera tenebrosa) with insect in the beak, Campo Nativo ecosystem (Native Field) of Vale Natural Reserve, municipality of Linhares, Esparito Santo State, Eastern Brazil.

Luiz Claudio Marigo / Swallow wing(Chelidoptera tenebrosa) feeding the chick in the nest in the ecosystem Campo Nativo (Native Field) of Vale Natural Reserve, municipality of Linhares, Esparito Santo State, Eastern Brazil.

Roland Seitre / White-whiskered Puffbird (Malacoptila panamensis). Gamboa, Panama city region, Canal rainforest, Panama.

Christian Ziegler / White-whiskered Puffbird (Malacoptila panamensis), Barro Colorado Island, Panama

Pete Oxford / White-fronted Nunbird (Monasa morphoeus), Pantanal, Brazil

Murray Cooper / Lanceolated Monklet (Micromonacha lanceolata), Colombia

Murray Cooper / Swallow-winged Puffbird (Chelidoptera tenebrosa), Ecuador

Murray Cooper / White-faced Nunbird (Hapaloptila castanea), Ecuador

Murray Cooper / White-chested Puffbird (Malacoptila fusca), Ecuador

Christian Ziegler / White-whiskered Puffbird (Malacoptila panamensis), Pipeline Road, Panama Canal Zone, Soberania National Park, Panama

Christian Ziegler / White-whiskered Puffbird (Malacoptila panamensis) portrait, Barro Colorado Island, Panama

Suzi Eszterhas / Black-fronted Nunbird (Monasa nigrifrons) pair, Pantanal, Brazil