Yellow Warbler

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Yellow Warbler

References:"Yellow Warbler." , Identification, All About Birds. N.p., n.d. Web. 27 Jan. 2015."Yellow Warbler (Setophaga Petechia)." — Eastside Audubon. N.p., n.d. Web. 27 Jan. 2015.



Scientific Name: Setophaga petechiaFamily: ParulidaeOrder: PasseriformesOther Names: Fauvette jaune (French). Chipe amarillo (Spanish)

MigrationYellow Warblers migrate earlier than most warblers, in both spring and fall. Like many other migrating songbirds, Yellow Warblers from eastern North America fly across the Gulf of Mexico in a single nonstop journey; some Yellow Warblers in fall take an overland route around the Gulf.They use all North American flyways to migrate.

Yellow Warbler

by Elise McTamaney

Yellow Warblers are small, evenly proportioned songbirds with medium-length tails and rounded heads. For a warbler, the straight, thin bill is relatively large. They are uniformly yellow birds. Males are a bright, egg-yolk yellow with reddish streaks on the underparts, but both sexes flash yellow patches in the tail. They are slightly larger than an American Goldfinch.

The female builds the nest over the course of 4 days with things like grass, spider webs, bark strips, and feaths.They have 1-7 eggs and incubate for 10–13 days with a nesting period of 9-12.Yellow Warblers build their nests in the vertical fork of a shrub or bush.

Yellow Warblers eat mostly insects like midges, caterpillars, beetles, leafhoppers and other bugs, and wasps.

Yellow Warblers are found among willows, but also in dwarf birch stands in the tundra, among aspen trees in the Rockies. On their wintering grounds Yellow Warblers live in mangrove forests, dry scrub, marshes, and forests, typically in lowlands but occasionally up to 8,500 feet elevation.

POPULATIONEven though they are one of the most numerous warblers in North America their populations has slowly declined since 1966, according to the North American Breeding Bird Survey. The estimated global breeding population is 90 millionIn the western U.S. the grazing of rangelands can degrade Yellow Warbler nesting habitat, particularly stands of willow trees along creeks.

ThreatsThe Brown-headed Cowbird lays its eggs in the nests of many species including Yellow Warblers, and this can reduce their breeding success. Like many migratory songbirds that move at night, Yellow Warblers can be attracted to and killed at tall, lighted structures such as TV towers and tall buildings.

FACTS1. If a cowbird lays its eggs in a Yellow Warbler’s nest, since they are frequently parasitized by the Brown-headed Cowbird, the warbler often begins building a new nest directly on top of the old one, abandoning both its own eggs and the cowbird’s.2. Yellow Warblers have occasionally been found caught in the strands of an orb weaver spider’s web.


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