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Close-up of a white-throated sparrow head, with bright white throat and yellow lore White-throated sparrows prefer to forage on the ground. The white-throated sparrow (Zonotrichia albicollis) is a passerine bird of the New World sparrow family Passerellidae. It breeds in northern North America and winters in the southern United States.
Golden-crowned sparrow: north-central Alaska (including the Aleutian Islands as far west as Unimak Island) and central Yukon south to the northwestern corner of the US state of Washington, and wintering from southern coastal Alaska to northern Baja California Zonotrichia capensis: Rufous-collared sparrow
The research that Tuttle focused on during her undergraduate work began with the white-throated sparrow alongside Doug Fraser and at the CLBS. Her later graduate and post-doctoral studies would expand to the subjects of sexual selection and reproductive trade-offs. This led into how the process of sperm competition functions in birds.
Gulls are typically gray or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water.
The white-crowned sparrow is a very rare vagrant to western Europe. [5] It has been sighted in England, Scotland, [5] [6] Ireland, [7] and Norway. [8] In 2008 a white-crowned sparrow was spotted in Cley next the Sea in Norfolk, England. [9] To commemorate the event an image of the bird was included in a window at St Margaret's Church.
It is a sister species with, and very closely related to, the white-crowned sparrow; studies of mitochondrial DNA show the two evolved into separate species very recently in geologic time. The white-throated sparrow is a slightly more distant relative. [4] Hybridization with both white-crowned and white-throated sparrows has been reported. [3]
No, this isn't an article written for (or by) squirrels – humans can actually eat acorns under certain circumstances. The nuts stem from oak trees, and can actually elicit a mild, nutty flavor. ...
Those that breed in the northern parts of North America, such as the white-throated sparrow and Lincoln's sparrow, migrate further southward into the continent during the winter, while others like the dark-eyed junco have been able to adapt to staying all year-round in some areas of North America. Most North American passerellid species usually ...