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An audio recording of a house sparrow. The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz).
The Eurasian tree sparrow (Passer montanus) is a passerine bird in the sparrow family with a rich chestnut crown and nape and a black patch on each pure white cheek. The sexes are similarly plumaged, and young birds are a duller version of the adult.
The song sparrow is a very rare vagrant to western Europe, with a few recorded in Great Britain and Norway. These birds forage on the ground, in shrubs or in very shallow water. They eat mainly insects and seeds. Birds in salt marshes may also eat small crustaceans. They nest either in a sheltered location on the ground or in trees or shrubs.
These sparrows are plump little brown or greyish birds, often with black, yellow or white markings. Typically 10–20 centimetres (3.9–7.9 in) long, they range in size from the chestnut sparrow ( Passer eminibey ), at 11.4 centimetres (4.5 in) and 13.4 grams (0.47 oz), to the parrot-billed sparrow ( Passer gongonensis ), at 18 centimetres (7. ...
American tree sparrow species account - Cornell Lab of Ornithology; American tree sparrow - Spizella arborea - USGS Patuxent Bird Identification InfoCenter "American tree sparrow media". Internet Bird Collection. American tree sparrow photo gallery at VIREO (Drexel University) Interactive range map of Spizella arborea at IUCN Red List
White-crowned sparrows nest either low in bushes or on the ground under shrubs and lay three to five brown-marked gray or greenish-blue eggs. [ 3 ] The white-crowned sparrow is known for its unihemispheric slow-wave sleep , which allows it to stay half-awake for up to two weeks during migration. [ 10 ]