Migration timing

When do palm warblers arrive in Alaska?

The Palm Warbler is a summer breeder in Alaska — here is when to expect it, when it leaves, and how to be ready.

Palm Warbler, verified photograph
Photo: Wikimedia Commons

Palm Warbler timing in Alaska

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

In Alaska, palm warblers are present through the warm months, arriving around May and heading south again by August.

These windows are set by latitude: Alaska sits in the middle part of this species' range, so timing here runs later than the continental average — the season starts later this far north and the birds wait for it. 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 palm warblers are expected in Alaska. 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 May is the time to act. Have feeders cleaned, filled and out by early May — the first palm warblers into Alaska are scouting for reliable food, and a station that's ready early gets added to their route.

Once nesting begins around June, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.

What palm warblers eat while they're here

  • Flies, beetles and caterpillars

Winters on southern lawns and roadsides, tail-wagging as it walks; occasionally takes suet crumbs.

Full Palm Warbler diet guide → · Best feeder for palm warblers →

Native plants that hold palm warblers in Alaska

Food keeps a migrant for a day; habitat keeps it for the season. These Alaska-native plants are known to attract palm warblers:

Paper birch
Betula papyrifera · Tree

Catkin seed feeds redpolls and siskins all winter.

Red-osier dogwood
Cornus sericea · Shrub

White fruit and red winter stems; good thicket cover.

Western serviceberry
Amelanchier alnifolia · Shrub

Saskatoon berries ripen in early summer.

Salal
Gaultheria shallon · Shrub

Dark berries and evergreen understory cover.

Salmonberry
Rubus spectabilis · Shrub

Spring flowers for Rufous Hummingbirds, early fruit for thrushes.

White spruce
Picea glauca · Tree

Cone crops drive winter irruptions of finches and crossbills.

Tamarack
Larix laricina · Tree

Deciduous conifer with small cones for siskins and redpolls.

Willow (Bebb)
Salix bebbiana · Shrub

Early catkins draw insects for arriving warblers and hummingbirds.

Keep exploring

Frequently asked

When do palm warblers arrive in Alaska?

palm warblers typically arrive in Alaska around May, with nesting underway by June. Timing can shift a week or two with the weather in any given year.

When do palm warblers leave Alaska?

Most palm warblers have left Alaska by August. They spend the winter farther south and return the following spring.

Do palm warblers stay in Alaska all year?

No — in Alaska the Palm Warbler is a summer breeder, present roughly May–August. Outside that window it is rarely seen in the state.

What should I put out before palm warblers arrive in Alaska?

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

Sources

  1. Palm Warbler — All About Birds, Cornell Lab of Ornithology
  2. Palm Warbler life history — Cornell Lab of Ornithology
  3. Palm Warbler — Audubon Guide to North American Birds
  4. eBird region overview and bar charts — Alaska
  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.