[order] Passeriformes | [family] Parulidae | [latin] Dendroica coronata | [UK] Yellow-Rumped Warbler | [FR] Paruline à croupion | [DE] Kronwaldsänger | [ES] Chipe Coronado | [IT] Dendroica groppone giallo | [NL] Geelstuitzanger

Geelstuitzanger determination

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Medium-sized, relatively robust but graceful Nearctic wood-warbler. In all plumages, diagnostic combination of white eye-ring, white throat, double white wing-bar, bright yellow rump, usually yellow blaze by shoulder, and white spots on outer tail-feathers. Fringes of wing- and tail-feathers noticeably bluish; in winter adult and immature, back always noticeably brown and well streaked. Breeding male has sharply etched forepart pattern of streaked grey crown, black face, and white marks around eye, with yellow crown-patch; breeding female duller but shows similar crown--patch, usually lacking in immature.
Unmistakable, with length of tail producing less compact form than most relatives, and plumage patterns complex but distinctive. Flight noticeably light and jerky or undulating; bird often appears to dance in the air when flycatching; when hovering, tail trails noticeably. Often droops or flicks wings. Aggressive towards other passerines, often charging them in flight. Hardy, surviving on berries in winter.

Yellow-rumped Warblers use many types of habitat. They breed high up in conifers, often in small openings within dense, wet, coniferous forests. During migration, they can be found in a variety of habitats, although they can be found at higher elevations in the fall than in the spring. Their winter habitat requirements are also fairly general. They can be found in almost any habitat but are most common in open woods and brushy areas, including gardens, orchards, residential areas, and beaches.

Breeds in North America from Alaska through much of Canada, extending southward in east to Great Lakes region, New England states, and (in Appalachians) West Virginia, and in west through mountains of western USA to Mexico and Guatemala. Accidental in Iceland, Britain, Ireland and very rare continental Europe..

Insects are the main diet of Yellow-rumped Warblers during the breeding season, although they rely heavily on berries when insects are not available. Their ability to digest the wax on wax myrtle and other berries is unique among the warblers and allows them to winter farther north than most other members of the family.

This species has a large range, with an estimated global Extent of Occurrence of 9,800,000 km². It has a large global population estimated to be 90,000,000 individuals (Rich et al. 2003). Global population trends have not been quantified, but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern. [conservation status from birdlife.org]

Males arrive on the breeding grounds a few days before the females. Monogamous pairs form shortly after the females arrive. The female builds the nest, usually on a horizontal conifer branch or fork, although broadleaved trees and shrubs are also used. The nest is a small, flat cup of twigs, grass, moss, and rootlets, lined with plant down and feathers that curve over the rim of the nest, partially covering the eggs. The female incubates 4 to 5 eggs for 12 to 13 days. The male feeds the female at the nest, and occasionally helps incubate. Both members of the pair feed the young, which leave the nest 10 to 14 days after hatching. They can make short flights within a few days of leaving the nest. Once the young fledge, the female often starts a second brood, while the male continues to feed the first brood for up to two weeks.

D. c. coronata Winters from w,c,e U.S. s to Mexico, C. America and W. Indies. Winter habitat in the U.S. in riparian willows, cottonwoods and sycamores. D. c. auduboni Winters in w U.S., Mexico and n C. America. Winter habitat sparsely in riparian vegetation, but also in pines, oaks, gardens, etc. (Sibley Charles G. 1996)