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Agelaius phoeniceus

(Red-And-Buff-Shouldered Blackbird)

Common Names

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Click on the language to view common names.

Common Names in English:

Bicolored Blackbird, Marsh Blackbird, Red-And-Buff-Shouldered Blackbird, Red-Shouldered Blackbird, Red-Shouldered Starling, Red-Wing, Red-Winged Blackbird, Red-Winged Blackbird Redpoll, Red-Winged Oriole, Red-Winged Starling, Swamp Blackbird

Common Names in French:

Carouge à épaulettes, Carouge à èpaulettes, Carouge à épaulettes

Common Names in German:

Rotschulterstärling

Common Names in Japanese:

ãƒã‚´ãƒ­ãƒ¢ã‚¬ãƒ©ã‚¹

Common Names in Spanish:

Tordo Sargento

Description

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Physical Description

Adult Female: Head : Crown: brown Face : dusky tan Eyebrow Line : broad, dusky tan Malar : thin brown mark Postocular Stripe : dark brown Body: Underparts: dusky white with heavy brown streaks Upperparts: brown with dark streaks.Adult Male: Tail: black.

Color:

The male is completely black except for a red shoulder patch (epaulet) with a narrow, yellow horizontal bar at the base of the patch. The female is brown above and has vertical brown and buff streaks below.

Adult male: Bright red patch on wings bordered by yellow (border missing in some races) · Black plumage · Immature male similar to adult male but has pale supercilium and brown edges to black feathers

Adult female: Pale supercilium · Heavily streaked underparts · Upperparts brown and white · Sometimes has yellow tinge to face and throat · Females very dark in some races · Juveniles similar to adult females

Size/Age/Growth

About 7.5 to 9.5 inches long, with a wingspan of 12 to 14.5 inches. Adults weigh about 2.3 ounces .

Habitat

The Red-winged Blackbird inhabits both wetland areas, such as freshwater and saltwater marshes, and dry upland areas, such as meadow, prairies, and old fields .

Vegetation: freshwater marshes, saltwater and brackish marshes, arid lowland scrubs, riparian thickets • Maximum Elevation: 3,000 meters • Foraging Strata: Midstory • Center of Abundance: Middle montane: mountains, middle range, 1,600-2,600 m. • Sensitivity to Disturbancet: Low

Typically found at an altitude of 0 to 3,793 meters (0 to 12,444 feet).[1]

Ecology: List of Habitats : 3.6 Shrubland - Subtropical/Tropical Moist 5.4 Wetlands (inland) - Bogs , Marshes, Swamps , Fens , Peatlands 12.5 Marine Intertidal - Salt Marshes (Emergent Grasses)

Biology

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Diet

During the breeding season , it forages primarily on insects and other invertebrates . During the winter months it feeds primarily on grains. Large foraging flocks are common during winter and, less commonly, during the summer away from the breeding territories. Large migratory flocks may be observed during fall and early spring . Predation of eggs and nestlings is common.

Reproduction

Breeding season lasts from February through August. The birds commonly nest in marsh or prairie habitat . The female builds a cup-shaped nest about 1-2 m (3-6 ft ) above ground or water. She weaves the nesting material , usually grasses or reeds, into several upright cattails, reeds, or grasses for support . The female lays 3 - 4 greenish-blue eggs with brown spots, which she incubates for 11 days. Young are altricial. Both parents feed insects and insect larvae to the nestlings for 14 days. Then the young fledge from the nest. Red-winged Blackbirds are often polygamous.

Migration

Migratory

Behavior

Nest predators include birds, snakes , and the Raccoon.

Taxonomy

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Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 17-Oct-2001.

Similar Species

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Tricolored Blackbird

Members of the genus Agelaius

There are approximately 53 species in this genus:

A. assimilis (Red-Shouldered Blackbird) · A. assimilis assimilis · A. assimilis subniger · A. cyanopus (Unicoloured Blackbird) · A. cyanopus cyanopus (Unicoloured Blackbird) · A. flavus (Saffron-Cowled Blackbird) · A. frontalis · A. gubernator · A. humeralis (Tawny-Shouldered Blackbird) · A. humeralis humeralis (Tawny-Shouldered Blackbird) · A. humeralis scopulus · A. humeralis xanthomus · A. icterocephalus (Yellow-Hooded Blackbird) · A. icterocephalus bogotensis · A. icterocephalus icterocephalus (Yellow-Hooded Blackbird) · A. icterocephalus ssp · A. phoeniceus (Red-And-Buff-Shouldered Blackbird) · A. phoeniceus aciculatus · A. phoeniceus arctolegus (Red-Winged Blackbird) · A. phoeniceus brevirostris · A. phoeniceus bryanti · A. phoeniceus californicus · A. phoeniceus caurinus · A. phoeniceus cavrinus · A. phoeniceus floridanus · A. phoeniceus fortis · A. phoeniceus grinnelli · A. phoeniceus gubernator · A. phoeniceus littoralis · A. phoeniceus mailliardorum · A. phoeniceus mearnsi · A. phoeniceus megapotamus · A. phoeniceus nelsoni · A. phoeniceus neutralis · A. phoeniceus nevadensis · A. phoeniceus nyaritensis · A. phoeniceus phoeniceus (Red-And-Buff-Shouldered Blackbird) · A. phoeniceus phoenicus · A. phoeniceus richmondi · A. phoeniceus sonoriensis · A. phoenicius · A. phoenicus · A. ruficapillus (Chestnut-Capped Blackbird) · A. ruficapillus ruficapillus (Chestnut-Capped Blackbird) · A. thilius (Yellow-Winged Blackbird) · A. thilius petersii · A. thilius thilius (Yellow-Winged Blackbird) · A. tricolor (Red-And-White-Shouldered Blackbird) · A. xanthocephalus · A. xanthomus (Yellow-Shouldered Blackbird) · A. xanthomus monensis · A. xanthomus xanthomus (Yellow-Shouldered Blackbird) · A. xanthophthalmus (Yellow-Eyed Blackbird)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 14, 2008:

Identifiers

Footnotes

  1. Mean = 519.470 meters (1,704.298 feet), Standard Deviation = 902.150 based on 20,000 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-06-19