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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.
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.
These birds have brown backs streaked with black, and distinctive head markings. Their cup nests, built by the female, are of plant material lined with fine grasses and constructed on the ground, low in a tree or bush, or in a niche in a wall. The female lays brown-blotched greenish-blue or greenish white eggs, which she incubates for 12–14 days.
The adult white-throated sparrow has a wingspan between 7.9 and 9.1 inches and is rather “plump,” The Cornell Lab’s All About Birds reports. Along with its white throat, the species also ...
Accipitridae is a family of birds of prey which includes hawks, eagles, kites, harriers, and Old World vultures. These birds have very large powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. White-tailed kite, Elanus leucurus (R) (H) Swallow-tailed kite, Elanoides forficatus
Olive sparrow: Arremonops rufivirgatus (Lawrence, 1851) 24 Green-backed sparrow: Arremonops chloronotus (Salvin, 1861) 25 Black-striped sparrow: Arremonops conirostris (Bonaparte, 1850) 26 Tocuyo sparrow: Arremonops tocuyensis Todd, 1912: 27 Five-striped sparrow: Amphispizopsis quinquestriata (Sclater, PL & Salvin, 1868) 28 Black-throated sparrow
Jim McCormac visits Slate Run Metro Park to see and hear white-crowned sparrows, especially the young birds practicing their song.
The other day — all at the same time — we had tree sparrows, white-crowned and white-throated sparrows, and even a fox sparrow. A song sparrow is also possible.