When do Cooper's hawks arrive in Ontario?
The Cooper's Hawk is a summer breeder in Ontario — here is when to expect it, when it leaves, and how to be ready.
Cooper's Hawk timing in Ontario
- Arrives
- Around March
- Leaves
- By July
- Status here
- Summer breeder
- Nesting season
- April–June
- Present roughly
- March–July
In Ontario, Cooper's hawks are present through the warm months, arriving around March and heading south again by July.
These windows are set by latitude: Ontario sits in the northern 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 Cooper's hawks are expected in Ontario. 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 Cooper's hawks into Ontario 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 Cooper's hawks eat while they're here
- Doves, jays, starlings and chipmunks
The classic 'feeder hawk'. If one moves in, take feeders down for a week or two and it will move on.
Full Cooper's Hawk diet guide → · Best feeder for Cooper's hawks →
Native plants that hold Cooper's hawks in Ontario
Food keeps a migrant for a day; habitat keeps it for the season. These Ontario-native plants are known to attract Cooper's hawks:
Insects, seeds and cavities.
Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.
Early-summer berries arrive exactly when nestlings are being fed.
Acorns plus hundreds of caterpillar species for nestling food.
Drought-hardy prairie oak with large acorns and a heavy insect load.
Summer fruit and one of the top caterpillar host trees.
Late-summer berry clusters taken by over 40 bird species.
Blue-black fall fruit and dense nesting cover.
Keep exploring
Frequently asked
When do Cooper's hawks arrive in Ontario?
Cooper's hawks typically arrive in Ontario around March, with nesting underway by April. Timing can shift a week or two with the weather in any given year.
When do Cooper's hawks leave Ontario?
Most Cooper's hawks have left Ontario by July. They spend the winter farther south and return the following spring.
Do Cooper's hawks stay in Ontario all year?
No — in Ontario the Cooper's Hawk is a summer breeder, present roughly March–July. Outside that window it is rarely seen in the state.
What should I put out before Cooper's hawks arrive in Ontario?
Have feeders up and clean by early March — first arrivals scout reliable food sources. Good offerings for this species: doves, jays, starlings and chipmunks.
Sources
- Cooper's Hawk — All About Birds, Cornell Lab of Ornithology
- Cooper's Hawk life history — Cornell Lab of Ornithology
- Cooper's Hawk — Audubon Guide to North American Birds
- eBird region overview and bar charts — Ontario
- Plant Hardiness Zones of Canada — Natural Resources Canada
- Audubon Native Plants Database
- Ontario Breeding Bird Atlas — Birds Canada
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.