When do northern rough-winged swallows arrive in Oregon?
The Northern Rough-winged Swallow is a summer breeder in Oregon — here is when to expect it, when it leaves, and how to be ready.
Northern Rough-winged Swallow timing in Oregon
- Arrives
- Around March
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- April–July
- Present roughly
- March–August
In Oregon, northern rough-winged swallows are present through the warm months, arriving around March 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 northern rough-winged swallows 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 March is the time to act. Have feeders cleaned, filled and out by early March — the first northern rough-winged swallows into Oregon are scouting for reliable food, and a station that's ready early gets added to their route.
Once nesting begins around April, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.
What northern rough-winged swallows eat while they're here
- Flies, midges, beetles and winged ants
Nests in drainpipes, culverts and bank holes rather than colonies; often the first swallow over a pond.
Full Northern Rough-winged Swallow diet guide → · Best feeder for northern rough-winged swallows →
Native plants that hold northern rough-winged swallows in Oregon
Food keeps a migrant for a day; habitat keeps it for the season. These Oregon-native plants are known to attract northern rough-winged swallows:
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Dark summer fruit and heavy caterpillar load.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Late-season bloom supports insects; seed for sparrows.
Acorns and a rich insect community in the Pacific Northwest.
Seed for crossbills, siskins and chickadees.
Early catkins draw insects for arriving warblers and hummingbirds.
Keep exploring
Frequently asked
When do northern rough-winged swallows arrive in Oregon?
northern rough-winged swallows typically arrive in Oregon around March, with nesting underway by April. Timing can shift a week or two with the weather in any given year.
When do northern rough-winged swallows leave Oregon?
Most northern rough-winged swallows have left Oregon by August. They spend the winter farther south and return the following spring.
Do northern rough-winged swallows stay in Oregon all year?
No — in Oregon the Northern Rough-winged Swallow is a summer breeder, present roughly March–August. Outside that window it is rarely seen in the state.
What should I put out before northern rough-winged swallows arrive in Oregon?
Have feeders up and clean by early March — first arrivals scout reliable food sources. Good offerings for this species: flies, midges, beetles and winged ants.
Sources
- Northern Rough-winged Swallow — All About Birds, Cornell Lab of Ornithology
- Northern Rough-winged Swallow life history — Cornell Lab of Ornithology
- Northern Rough-winged Swallow — 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.