When do orange-crowned warblers arrive in Alberta?
The Orange-crowned Warbler is a summer breeder in Alberta — here is when to expect it, when it leaves, and how to be ready.
Orange-crowned Warbler timing in Alberta
- Arrives
- Around May
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- June–July
- Present roughly
- May–August
In Alberta, orange-crowned warblers are present through the warm months, arriving around May and heading south again by August.
These windows are set by latitude: Alberta 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
Highlighted months are when orange-crowned warblers are expected in Alberta. 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 orange-crowned warblers into Alberta 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 orange-crowned warblers eat while they're here
- Caterpillars, aphids, ants and spiders
One of few warblers that regularly visits winter feeders in the south and on the Pacific coast.
Full Orange-crowned Warbler diet guide → · Best feeder for orange-crowned warblers →
Native plants that hold orange-crowned warblers in Alberta
Food keeps a migrant for a day; habitat keeps it for the season. These Alberta-native plants are known to attract orange-crowned warblers:
Catkin seed feeds redpolls and siskins all winter.
Dark summer fruit and heavy caterpillar load.
Late-season bloom supports insects; seed for sparrows.
Seed for crossbills, siskins and chickadees.
Spruce-budworm habitat and dense winter roosting cover.
Cone crops drive winter irruptions of finches and crossbills.
Deciduous conifer with small cones for siskins and redpolls.
Early catkins draw insects for arriving warblers and hummingbirds.
Keep exploring
Frequently asked
When do orange-crowned warblers arrive in Alberta?
orange-crowned warblers typically arrive in Alberta around May, with nesting underway by June. Timing can shift a week or two with the weather in any given year.
When do orange-crowned warblers leave Alberta?
Most orange-crowned warblers have left Alberta by August. They spend the winter farther south and return the following spring.
Do orange-crowned warblers stay in Alberta all year?
No — in Alberta the Orange-crowned 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 orange-crowned warblers arrive in Alberta?
Have feeders up and clean by early May — first arrivals scout reliable food sources. Good offerings for this species: caterpillars, aphids, ants and spiders.
Sources
- Orange-crowned Warbler — All About Birds, Cornell Lab of Ornithology
- Orange-crowned Warbler life history — Cornell Lab of Ornithology
- Orange-crowned Warbler — Audubon Guide to North American Birds
- eBird region overview and bar charts — Alberta
- Plant Hardiness Zones of Canada — Natural Resources Canada
- 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.