When do black-headed grosbeaks arrive in Oregon?
The Black-headed Grosbeak is a summer breeder in Oregon — here is when to expect it, when it leaves, and how to be ready.
Black-headed Grosbeak timing in Oregon
- Arrives
- Around April
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- May–July
- Present roughly
- April–August
In Oregon, black-headed grosbeaks are present through the warm months, arriving around April and heading south again by August.
These windows are set by latitude: Oregon sits in the middle part of this species' range, so timing here tracks the continental average closely. In any given year, weather can move the first arrivals by a week or two either way.
Month by month in this state
Highlighted months are when black-headed grosbeaks are expected in Oregon. The edges of the window are the interesting weeks — first arrivals and last departures vary most from year to year.
Getting ready before they arrive
The week before April is the time to act. Have feeders cleaned, filled and out by early April — the first black-headed grosbeaks into Oregon are scouting for reliable food, and a station that's ready early gets added to their route.
Once nesting begins around May, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.
What black-headed grosbeaks eat while they're here
- Beetles and caterpillars
One of few birds that eats monarch butterflies; a summer feeder regular in the West.
Full Black-headed Grosbeak diet guide → · Best feeder for black-headed grosbeaks →
Native plants that hold black-headed grosbeaks in Oregon
Food keeps a migrant for a day; habitat keeps it for the season. These Oregon-native plants are known to attract black-headed grosbeaks:
Red fruit heads hang on through winter.
Tubular flowers for hummingbirds and seed heads for finches.
Prolific seed heads for finches and sparrows.
Annual native sunflower — the original feeder seed.
Native bunchgrass; winter seed and ground cover for sparrows and juncos.
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Dark summer fruit and heavy caterpillar load.
Keep exploring
Frequently asked
When do black-headed grosbeaks arrive in Oregon?
black-headed grosbeaks typically arrive in Oregon around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.
When do black-headed grosbeaks leave Oregon?
Most black-headed grosbeaks have left Oregon by August. They spend the winter farther south and return the following spring.
Do black-headed grosbeaks stay in Oregon all year?
No — in Oregon the Black-headed Grosbeak is a summer breeder, present roughly April–August. Outside that window it is rarely seen in the state.
What should I put out before black-headed grosbeaks arrive in Oregon?
Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: beetles and caterpillars.
Sources
- Black-headed Grosbeak — All About Birds, Cornell Lab of Ornithology
- Black-headed Grosbeak life history — Cornell Lab of Ornithology
- Black-headed Grosbeak — Audubon Guide to North American Birds
- eBird region overview and bar charts — Oregon
- USDA Plant Hardiness Zone Map (2023)
- Audubon Native Plants Database
Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.