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The average territory size of rufous-crowned sparrows in the chaparral of California ranges from 2 acres (0.81 ha) to 4 acres (1.6 ha). [11] The density of territories varies by habitat , including 2.5 to 5.8 territories per 99 acres (40 ha) of three- to five-year-old burned chaparral to 3.9 to 6.9 territories for the same amount of coastal ...
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).
List of birds of Santa Cruz County, California. The county is in Northern California, located on the California coast, including northern Monterey Bay, and west of the San Francisco Bay and Silicon Valley. It includes the southwestern Santa Cruz Mountains. [1] [2]
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.
Lincoln's sparrow at Cosumnes River Preserve in Sacramento County, California. Juveniles strongly resemble juvenile swamp sparrows with a streaky chest and not yet buffy breast, but Lincoln's sparrows rarely have a unicolored crown like the swamp sparrow. [2] Adult measurements: [4] Length: 5.1–5.9 in (13–15 cm) Weight: 0.6–0.7 oz (17–19 g)
There is evidence that Bachman sparrow may select sites with some tall vegetation. In north-central Florida, densities of Bachman's sparrows in young (2–4 years) slash pine plantations with artificial snags added (n=3) was 31.4 pairs/km 2, while in similar vegetation without snags (n=3) Bachman's sparrow density was 22.3 pairs/km 2 [8]. In an ...
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.
The grasshopper sparrow (Ammodramus savannarum) is a small New World sparrow. It belongs to the genus Ammodramus , which contains three species that inhabit grasslands and prairies . Grasshopper sparrows are sometimes found in crop fields and they will readily colonize reclaimed grassland.