Based on 1,591 research-grade iNaturalist observations in Oklahoma, Red-winged Blackbird is most often recorded in April; in Oklahoma it behaves like a seasonal. It ranks #12 among birds recorded in the state in our data.
Agelaius phoeniceus
Red-winged Blackbird in Oklahoma by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Oklahoma in April
Canada Goose

Northern Cardinal

American Robin

Mallard

Scissor-tailed Flycatcher

Mourning Dove

House Sparrow

Blue-winged Teal
Places to look in Oklahoma
State ParkAlabaster Caverns State Park
Robbers Cave State Park
Natural Falls State Park
Ozark–St. Francis National Forest
Wichita Mountains Wildlife Refuge
Boiling Springs State Park
FAQ
When does Red-winged Blackbird appear in Oklahoma?
Mainly March–May, with the most records in April.
How common is Red-winged Blackbird in Oklahoma?
It ranks #12 by number of iNaturalist observations among birds in Oklahoma (1,591 records in our sample).