Northern Rough-winged Swallows in Washington
When northern rough-winged swallows are present in Washington, when they nest, which native Washington plants feed them, and how to host them in a USDA 4a–9a yard.
- Status in Washington
- Summer breeder
- Nesting window
- April–July
- Broods
- 1–2 per season
- Hardiness zones
- USDA 4a–9a
When to expect northern rough-winged swallows in Washington
Northern Rough-winged Swallows are summer residents in Washington, arriving shortly before nesting begins in April and leaving after the young are independent.
Marine west-coast climate west of the Cascades, semi-arid shrub-steppe to the east.
Nesting in Washington
Across Washington, northern rough-winged swallows typically nest from April–July. Plan around that window: March for setup, July for clean-out.
Dry, sunny summers west of the Cascades; hot in the Columbia Basin.
- Northern Rough-winged Swallows don't use nest boxes. Keep dense native shrubs and trees such as paper birch, chokecherry, ponderosa pine for nest sites.
- Delay heavy pruning of shrubs until after July.
Native Washington plants that attract northern rough-winged swallows
Of the regional native plants we track for Washington, these 8 provide food or cover northern rough-winged swallows use:
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.
Feeding northern rough-winged swallows through the Washington year
- Top foods: None — open water and earth banks are the draw.
- In Washington's summer: offer water and insect foods; natural food is abundant.
Full diet breakdown for northern rough-winged swallows · Best feeder for northern rough-winged swallows
Frequently asked
Are northern rough-winged swallows in Washington year-round?
No. Northern Rough-winged Swallows are summer breeders in Washington and leave for the winter.
When do northern rough-winged swallows nest in Washington?
Nesting in Washington typically runs April–July, with 1–2 per season. Clutches are 4–8 eggs, incubated for 12–16 days.
What native plants attract northern rough-winged swallows in Washington?
Tall goldenrod, Paper birch, Chokecherry, Ponderosa pine, Rabbitbrush, Oregon white oak, Douglas fir, Willow (Bebb) are native plants in Washington that provide food or cover for northern rough-winged swallows.
Northern Rough-winged Swallows in other regions
Other backyard birds in Washington
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 — Washington
- 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.