Brown-headed Cowbirds are smallish blackbirds, with a shorter tail and thicker head than most other blackbirds. The bill has a distinctive shape: it’s much shorter and thicker-based than other blackbirds', almost finch-like at first glance. In flight, look for the shorter tail.
Slightly smaller than a Red-winged Blackbirdbetween sparrow and robin
- Length: 7.5-8.7 in (19-22 cm)
- Weight: 1.5-1.8 oz (42-50 g)
- Wingspan: 14.2 in (36 cm)
- Length: 6.3-7.9 in (16-20 cm)
- Weight: 1.3-1.6 oz (38-45 g)
- Wingspan: 12.6-15.0 in (32-38 cm)