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Sooty fox sparrow, Sacramento, California. More specific information regarding plumage is available in the accounts for the various taxa.. Red fox sparrow, P. i. iliaca (Merrem, 1786) – this taxon breeds in the taiga of Canada and Alaska and winters in central and eastern North America.
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 Iago sparrow was once thought to be most closely related to the rufous sparrows, a group of species within the genus Passer which live in similar habitats on continental Africa. Though the Iago sparrow is closest to the rufous sparrows in appearance, it has a number of crucial differences in morphology and behavior, and is separated by ...
Data on first-year return rates (or "philopatry", the inverse of natal dispersal) is limited, but in NE Kansas, ~2% of young birds returned to the site to breed in the subsequent year. [24] Grasshopper sparrows are unusual in their particularly high rates of breeding dispersal (i.e., one-way movements between successive breeding sites). [25]
The sooty fox sparrow complex varies clinally in intensity of color. The upperparts and head are a variable shade of brown, with streaks on the underparts of the same color. The northernmost birds are a sandy brown, while southernmost birds are a dark coffee-like color. Sooties prefer to breed in willows and alders at the edge of wet habitats.
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They mainly eat seeds, but also eat insects in the breeding season. They are typically encountered as pairs or family groups in the breeding season, and assemble in flocks for the winter migration. The flight call is a thin seep. [17] Sensu lato, the Savannah sparrow is considered a threatened species by the IUCN.
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