Migration timing

When do warbling vireos arrive in Washington?

The Warbling Vireo is a summer breeder in Washington — here is when to expect it, when it leaves, and how to be ready.

Warbling Vireo, verified photograph
Photo: Wikimedia Commons

Warbling Vireo timing in Washington

Arrives
Around April
Leaves
By August
Status here
Summer breeder
Nesting season
May–July
Present roughly
April–August

In Washington, warbling vireos are present through the warm months, arriving around April and heading south again by August.

These windows are set by latitude: Washington 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

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Highlighted months are when warbling vireos are expected in Washington. 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 warbling vireos into Washington 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 warbling vireos eat while they're here

  • Caterpillars, beetles, bugs and wasps

A shade-tree bird of parks and streamside cottonwoods; sings from high in the canopy.

Full Warbling Vireo diet guide → · Best feeder for warbling vireos →

Native plants that hold warbling vireos in Washington

Food keeps a migrant for a day; habitat keeps it for the season. These Washington-native plants are known to attract warbling vireos:

Tall goldenrod
Solidago altissima · Perennial

Insect-rich in fall and seed in winter.

Paper birch
Betula papyrifera · Tree

Catkin seed feeds redpolls and siskins all winter.

Chokecherry
Prunus virginiana · Shrub

Dark summer fruit and heavy caterpillar load.

Ponderosa pine
Pinus ponderosa · Tree

Seeds and bark insects; pygmy nuthatch and woodpecker habitat.

Rabbitbrush
Ericameria nauseosa · Shrub

Late-season bloom supports insects; seed for sparrows.

Oregon white oak
Quercus garryana · Tree

Acorns and a rich insect community in the Pacific Northwest.

Douglas fir
Pseudotsuga menziesii · Tree

Seed for crossbills, siskins and chickadees.

Willow (Bebb)
Salix bebbiana · Shrub

Early catkins draw insects for arriving warblers and hummingbirds.

Keep exploring

Frequently asked

When do warbling vireos arrive in Washington?

warbling vireos typically arrive in Washington around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.

When do warbling vireos leave Washington?

Most warbling vireos have left Washington by August. They spend the winter farther south and return the following spring.

Do warbling vireos stay in Washington all year?

No — in Washington the Warbling Vireo is a summer breeder, present roughly April–August. Outside that window it is rarely seen in the state.

What should I put out before warbling vireos arrive in Washington?

Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: caterpillars, beetles, bugs and wasps.

Sources

  1. Warbling Vireo — All About Birds, Cornell Lab of Ornithology
  2. Warbling Vireo life history — Cornell Lab of Ornithology
  3. Warbling Vireo — Audubon Guide to North American Birds
  4. eBird region overview and bar charts — Washington
  5. USDA Plant Hardiness Zone Map (2023)
  6. 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.