Species Comparisons • Backyard Identification
Brewer’s Blackbird vs Red-winged Blackbird
Brewer’s Blackbird
Brewer’s Blackbird • Wikimedia Commons
Brewer’s Blackbird
Brewer’s Blackbird • Wikimedia Commons
Brewer’s Blackbird
Brewer’s Blackbird • Wikimedia Commons
Brewer’s Blackbird
Brewer’s Blackbird • Wikimedia Commons
Red-winged Blackbird
Red-winged Blackbird • Wikimedia Commons
Red-winged Blackbird
Red-winged Blackbird • Wikimedia Commons
Red-winged Blackbird
Red-winged Blackbird • Wikimedia Commons
Red-winged Blackbird
Red-winged Blackbird • Wikimedia Commons
Brewer’s Blackbird vs Red-winged Blackbird (Euphagus cyanocephalus vs Agelaius phoenicuses): The Complete Backyard Identification Guide
Field Summary
Quick Answer: The Fastest Way to Tell Them Apart
Two common blackbirds of open country. Three rules:
- Shoulders: red-and-yellow epaulets = Red-winged; plain black = Brewer’s.
- Eye: pale yellow = Brewer’s male; dark = Red-winged.
- Female: plain gray-brown = Brewer’s; heavily streaked like a giant sparrow = Red-winged.
At-a-Glance Comparison Table
The lawn blackbird and the marsh blackbird, side by side. KEY rows separate fastest.
| Feature | Brewer’s Blackbird | Red-winged Blackbird |
|---|---|---|
| Scientific Name | Euphagus cyanocephalus | Agelaius phoenicuses |
| Length KEY | 9.0 in (23 cm) | 8.75 in (22 cm) |
| Wingspan | 14.6 in (37 cm) | 13 in (33 cm) |
| Weight | 2.2 oz (63 g) | 1.1–2.7 oz (32–77 g) |
| Overall Shape | A glossy western blackbird of parking lots, parks and ranches | The marsh blackbird — males flash scarlet-and-yellow shoulder epaulets |
| Male Plumage KEY | Glossy black with a purple-green sheen and a piercing pale yellow eye | Glossy black with red shoulder patches edged in yellow — flashed in display |
| Female Plumage | Plain gray-brown with a dark eye | Heavily streaked brown all over — looks like a giant sparrow |
| Bill Shape | Thin, pointed, black | Conical, sharp, black |
| Tail | Medium, rounded | Medium, rounded |
| Core Range KEY | The West — open country, towns, parks and farmyards; resident to migrant | Marshes, wet meadows and fields continent-wide |
| Migration | Partial migrant; huge winter flocks in the Southwest | Partial migrant; huge mixed winter flocks in the South |
| Feeder Presence | Walks the ground under feeders for cracked corn and millet | Swarms platform feeders for sunflower and millet near wetlands |
| Favorite Foods | Seeds, grain, insects — mostly from the ground | Seeds, grain, insects |
| Song KEY | A creaky, wheezy “ksh-eee” | A gurgling “conk-la-ree” from a cattail top |
| Flight Call | A sharp metallic “check” | A sharp “check” and high “teee” |
| Population Trend | Stable; thriving in human-altered open country | Still abundant though declining; the voice of American wetlands |
Male Field Marks, Side by Side
Brewer’s Blackbird — Male
Euphagus cyanocephalus
- Glossy black with a pale yellow eye.
- Purple-green sheen in good light.
- The tame blackbird of western parking lots.
Red-winged Blackbird — Male
Agelaius phoenicuses
- Glossy black with red-and-yellow epaulets.
- Sings “conk-la-ree” while flaring his shoulders.
- Fearlessly dive-bombs hawks, herons and people.
Female & Juvenile Marks, Side by Side
Brewer’s Blackbird — Female
Euphagus cyanocephalus
- Plain gray-brown, dark eye — easy to overlook.
- Walks boldly under picnic tables.
- Winter flocks mix with other blackbirds.
Red-winged Blackbird — Female
Agelaius phoenicuses
- Heavily streaked brown — a giant sparrow look.
- Weaves a hanging nest in cattails.
- Winter flocks mix with grackles and cowbirds.
Part-by-Part Anatomy Breakdown
Every part offers a check:
| Body Part | Brewer’s Blackbird | Red-winged Blackbird |
|---|---|---|
| Male Shoulder | Plain black | Scarlet epaulets with yellow edge |
| Male Eye | Pale yellow | Dark |
| Male Sheen | Purple-green all over | Little sheen — matte black |
| Female | Plain gray-brown, dark eye | Heavily streaked brown, bold eyebrow |
| Habitat | Lawns, parking lots, pastures | Marshes, wet meadows, ditch edges |
| Nest | Cup in shrubs or on the ground | Woven into cattails and marsh grass |
| Song | Creaky, wheezy “ksh-eee” | Gurgling “conk-la-ree” |
Song & Call Comparison
Brewer’s Blackbird
Euphagus cyanocephalus
Song: a creaky, wheezy ksh-eee.
Calls: a sharp metallic check.
Brewer’s Blackbird voice • Wikimedia Commons
Red-winged Blackbird
Agelaius phoenicuses
Song: a gurgling, metallic conk-la-ree.
Calls: a sharp check and high teee.
Red-winged Blackbird voice • Wikimedia Commons
Range & Seasonal Presence
The Brewer’s Blackbird owns western open country — lawns, parks and ranches, usually away from water.
The Red-winged Blackbird owns wetlands continent-wide — cattail marshes, wet ditches and flooded fields — spilling into upland feeders outside the breeding season.
Feeder Behavior & Favorite Foods
- Brewer’s Blackbird: cracked corn and millet on open ground.
- Red-winged Blackbird: sunflower and millet on platforms near wetlands — often in flocks.
- Flock mixing: winter blackbird flocks combine Red-wingeds, Brewer’s, cowbirds and starlings.
- Management: both can swarm; feed small amounts and use weight-sensitive feeders.
Temperament & Flock Behavior
Brewer’s Blackbirds are mild and tame — strutting calmly around people in parks.
Red-winged Blackbirds are fierce defenders — males flare their epaulets and dive-bomb anything near the marsh, from herons to joggers.
6-Step Backyard ID Checklist
- Shoulders. Red epaulets = Red-winged; plain = Brewer’s.
- Eye. Pale yellow = Brewer’s; dark = Red-winged.
- Female. Plain gray = Brewer’s; streaked = Red-winged.
- Habitat. Lawn = Brewer’s; marsh = Red-winged.
- Song. Creaky = Brewer’s; “conk-la-ree” = Red-winged.
- Sheen. Glossy = Brewer’s; matte = Red-winged.
Frequently Asked Questions
How do you tell a Brewer’s from a Red-winged Blackbird?
Male Red-wingeds flash scarlet-and-yellow shoulder epaulets and have dark eyes. Male Brewer’s are plain glossy black with a pale yellow eye. Females: streaked = Red-winged; plain gray-brown = Brewer’s.
Can you always see the Red-winged’s red shoulders?
No — males can conceal the red, showing only the yellow edge. The dark eye, matte plumage and marsh habitat still give them away.
Which one visits feeders?
Both — Red-wingeds swarm platforms near wetlands; Brewer’s prefer open ground feeding. Winter flocks often mix.
Why does the female Red-winged look like a sparrow?
Heavy brown streaking camouflages her on the marsh nest, where she does all the incubating while the showy male defends the territory.
Are Red-winged Blackbirds aggressive?
Males are fearless in breeding season — dive-bombing hawks, herons, dogs and people who pass too close to the nest marsh.
Which one is more widespread?
The Red-winged — found in wetlands continent-wide, one of the most abundant birds in North America. Brewer’s is a western species.
Key Takeaways
- Shoulders: Red epaulets = Red-winged; plain = Brewer’s.
- Eye: Yellow = Brewer’s; dark = Red-winged.
- Female: Streaked = Red-winged; plain = Brewer’s.
- Habitat: Marsh = Red-winged; lawn = Brewer’s.
- Song: “Conk-la-ree” = Red-winged; creaky = Brewer’s.
- Sheen: Matte = Red-winged; glossy = Brewer’s.