Ross Hoddinott / Social flock of House Sparrows (Passer domesticus) perched together in snowy hedgerow. Near Bradworthy, Devon, England, UK. January

Ann & Steve Toon / Mixed flock of House sparrows (Passer domesticus) and Chaffinchs (Fringilla coelebs) on bird table after heavy snowfall, UK

Andrew Walmsley / Male House sparrow (Passer domesticus) peched on a fallen Fir tree in heavy rain, Christchurch, New Zealand, March

Jose B. Ruiz / Common / House sparrow {Passer domesticus} male perching on stone with feathers ruffled, Quintana de la Serena, Badajoz, Extremadura, Spain April

Colin Varndell / Male Common / House sparrow {Passer domesticus} UK.

David Kjaer / Common (House) sparrow male perched on roof edge, England, Europe

Nigel Bean / Common (House) sparrow female in spring, England, UK

Mike Wilkes / Common / House sparrow male, UK

John Cancalosi / House sparrow (Passer domesticus) male flying from nest in Saguaro (Carnegiea gigantea) cactus. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran desert,...

John Cancalosi / House sparrow (Passer domesticus) male at nest in Saguaro (Carnegiea gigantea) cactus cavity. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran desert, A...

John Cancalosi / House sparrow (Passer domesticus) female feeding chicks at nest in Saguaro (Carnegiea gigantea) cactus. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran...

Ann & Steve Toon / House sparrows (Passer domesticus) and tree sparrow (Passer montanus) (right), Caerlaverock WWT, Dumfries & Galloway, Scotland, UK, October