Rusty Blackbird is a medium-sized blackbird with a slender bill and medium-length tail. The bill is slightly decurved. They are a bit larger and longer-tailed than Red-winged Blackbird with a more slender bill. Rusty Blackbird is thinner-billed and shorter-tailed than Common Grackle.
- Both Sexes
- Length: 8.3-9.8 in (21-25 cm)
- Weight: 1.7-2.8 oz (47-80 g)
- Wingspan: 14.6 in (37 cm)