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FeatherBullock's Oriole (Icterus bullockii)
Bullocks Oriole primary wing feather, male by U.S. Fish & Wildlife Service, National Fish and Wildlife Forensics Laboratory, via the FWS Feather Atlas, Public domain
songbird

Bullock's Oriole

Icterus bullockii

The western counterpart to the Baltimore Oriole, identified by its orange cheeks, black eyeline and throat stripe, and an unusually large white wing patch.

Feather type
Bright orange body feathers with a black crown, eyeline, and throat stripe; a large white wing patch; black tail feathers with orange sides
Colours
Male orange face and underside with a black crown, eyeline, and throat stripe, plus a large white wing patch; female grayish-yellow with an olive back
Bird size
Medium songbird, ~17-22 cm

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Overview

The Bullock's Oriole is the western counterpart to the more familiar Baltimore Oriole, sharing the family's vivid orange-and-black coloring but differing in the details of its facial pattern. It breeds in open woodland and riparian corridors across the western United States.

Unlike the Baltimore Oriole's solid black hood, adult male Bullock's Orioles show orange cheeks set off by a black crown, eyeline, and throat stripe, giving the face a very different pattern despite the similar overall orange-and-black color scheme.

Its feathers are also notable for an unusually large white wing patch, considerably bigger than the single wingbar seen in the Baltimore Oriole, making the two species distinguishable by feather pattern alone.

Identifying the Feather

Size and Shape

Medium-length, sturdy contour and flight feathers similar in size to the Baltimore Oriole.

Color and Pattern

  • Adult male facial feathers show orange cheeks bordered by a black crown, eyeline, and throat stripe, rather than a solid black hood.
  • Underside feathers are bright orange; back feathers are black.
  • Wing feathers show a notably large white patch, bigger than the single wingbar of the Baltimore Oriole.
  • Tail feathers are black with orange along the sides.
  • Females and immatures are grayish-yellow with an olive back, duller than adult males.

Comparisons

The orange cheeks and larger white wing patch separate this species' feathers from the Baltimore Oriole, whose males show a solid black hood and a single, narrower wingbar. The two species' ranges overlap narrowly in the Great Plains, where hybrid individuals can show intermediate features.

Plumage & Molt

Sexual dimorphism similar to the Baltimore Oriole: adult males show orange cheeks with black crown, eyeline, and throat stripe, while females and immatures are duller grayish-yellow with an olive back. Males take time to reach full adult plumage. One complete molt occurs annually after breeding.

Habitat & Range

Bullock's Orioles breed across the western United States in open woodland, riparian corridors, and shade trees, wintering in Mexico and Central America as long-distance migrants. A narrow hybrid zone with the Baltimore Oriole occurs on the Great Plains where the two species' ranges meet.

Behavior & Field Notes

This species weaves a hanging pouch nest similar to the Baltimore Oriole's, though its song tends to be harsher and more chattering. It feeds on insects, nectar, and fruit, foraging actively in the tree canopy. A vivid orange feather with a large white wing patch, or a black feather with an orange side patch, is a good match for this western species.

Frequently asked questions

How can I tell a Bullock's Oriole feather from a Baltimore Oriole feather?

Bullock's Oriole males show orange cheeks with a black eyeline and throat stripe plus a larger white wing patch, while Baltimore Oriole males show a solid black hood and a narrower single wingbar.

Where do these two oriole species overlap?

Their ranges meet narrowly in the Great Plains, where hybrid individuals can show intermediate feather features.

What wing feature is most useful for identifying this species?

A notably large white wing patch, bigger than that of the similar Baltimore Oriole.

What habitat is most likely to yield this species' feathers?

Open woodland, riparian corridors, and shade trees across the western United States.