Alex Mustard / Red saddleback anemonefish (Amphiprion ephippium) in its host anemone, with soft corals behind. This species of anemonefish is endemic to the Andaman Sea. Richelieu Rock, Thailand. Andaman Sea, India...

Alex Mustard / Andaman anemone fishes (Amphiprion ephippium) hovering above a sea anemone on a coral reef in Thailand. Richelieu Rock, Andaman Sea, Indian Ocean.

Alex Mustard / Red saddleback anemonefish (Amphiprion ephippium) in its host anemone. East of Eden, Similan Islands, Thailand. Andaman Sea, Indian Ocean. Endemic to Andaman Sea.

Andy Rouse / Black headed bunting, (Emberiza melanocephala), catching flies on sunflower crop, Bulgaria, June.

Ernie Janes / House sparrow (Passer domesticus) in building, Scottish borders, UK, July.

Donald M. Jones / Clay-colored Sparrow (Spizella pallida), Montana

David Perpinan / Common rock sparrow (Petronia petronia) feeding chicks in nest, filmed using an infra-red camera, Cuenca, Castile-La Mancha, Spain, June.

David Perpinan / Common rock sparrow (Petronia petronia) chick exploring outside nest, Cuenca, Castile-La Mancha, Spain, June.

David Perpinan / Adult Common rock sparrow (Petronia petronia) feeding chicks, Cuenca, Castile-La Mancha, Spain, June.

David Perpinan / Female Rock sparrow (Petronia petronia) feeding chick inside nest, filmed with an infrared camera, Spain, June.

David Perpinan / Rock sparrow (Petronia petronia) feeding chick outside nest, Spain, June.

Nick Saunders/ BIA / Le Conte's Sparrow (Ammodramus leconteii), Saskatchewan, Canada

Alan Murphy/ BIA / Grasshopper Sparrow (Ammodramus savannarum) male calling, Arizona

Donald M. Jones / Song Sparrow (Melospiza melodia), western Montana

Alan Murphy / Savannah Sparrow (Passerculus sandwichensis), British Columbia, Canada