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Tree Swallow Tachycineta bicolor
Adult males are bright iridescent blue-green above; females and immatures are duller brownish with limited or no iridescence. Always note compact shape, fairly broad wings, and slightly notched tail. Occurs in a variety of open habitats including grassy fields, lakes, and marshes.
Adult males are blue-green above and white below with blackish flight feathers and a thin black eye mask; females are duller with more brown in their ...
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The female lays 2 to 8 (usually 4 to 7) eggs, at a rate of one per day. The female then incubates the eggs for 11 to 19 (usually 14 to 15) days. The female ...
"Female tree swallows (Tachycineta bicolor) increase offspring heterozygosity through extrapair mating". Behavioral Ecology and Sociobiology. 61 (11): 1725 ...
The female incubates the eggs and the male guards the nesting site. The eggs hatch in about two weeks. Both the male and the female feed the chicks. The ...
Tree Swallows are a familiar sight in summer fields and wetlands across northern North America. They chase after flying insects with acrobatic twists and turns.
Nest (built mostly by female) is cup of grass, weeds, rootlets, moss, pine needles, other plant materials. Usually lined with many feathers (from other kinds of ...
Mar 16, 2022 · Both sexes are similiar, but the female retains much of her juvenile plumage until her third year. Present in Park: April through September.
A medium-sized swallow, with gleaming white underparts. Adult males are bright iridescent blue-green above; females and immatures are duller brownish.
Males and females look alike, although females may be a little more greenish. Some adults are drab gray. They look like they are wearing a tuxedo. Their ...