Red-winged Blackbirds in Ontario
When red-winged blackbirds are present in Ontario, when they nest, which native Ontario plants feed them, and how to host them in a Canadian zones 0a–7a yard.
- Status in Ontario
- Summer breeder
- Nesting window
- May–July
- Broods
- 2–3 per season
- Hardiness zones
- Canadian zones 0a–7a (southern Ontario roughly equivalent to USDA 4–6)
When to expect red-winged blackbirds in Ontario
Red-winged Blackbirds are summer residents in Ontario, arriving shortly before nesting begins in May and leaving after the young are independent. Through the season they feed on dragonflies, beetles and caterpillars.
Humid continental in the south, boreal and subarctic in the north; most backyard birding happens in the southern Great Lakes lowlands.
Nesting in Ontario
Across Ontario, red-winged blackbirds typically nest from May–July. Nest site: woven cup lashed to cattails or shrubs over water. Females lay 2–4 eggs, incubate for 11–13 days, and young leave the nest after 11–14 days.
Short, warm summers; Point Pelee and Long Point are continent-famous migration sites.
- Red-winged Blackbirds don't use nest boxes. Keep dense native shrubs and trees such as sugar maple, flowering dogwood, serviceberry for nest sites.
- Delay heavy pruning of shrubs until after July.
Native Ontario plants that attract red-winged blackbirds
Of the regional native plants we track for Ontario, these 8 provide food or cover red-winged blackbirds use:
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.
Feeding red-winged blackbirds through the Ontario year
One of the earliest spring returns in the north; males arrive weeks before females to claim marsh territories.
- Best foods: Cracked corn, Millet, Sunflower.
- In Ontario's summer: offer water and insect foods; natural food is abundant.
Full diet breakdown for red-winged blackbirds · Best feeder for red-winged blackbirds
Frequently asked
Are red-winged blackbirds in Ontario year-round?
No. Red-winged Blackbirds are summer breeders in Ontario and leave for the winter.
When do red-winged blackbirds nest in Ontario?
Nesting in Ontario typically runs May–July, with 2–3 per season. Clutches are 2–4 eggs, incubated for 11–13 days.
What native plants attract red-winged blackbirds in Ontario?
Sugar maple, Flowering dogwood, Serviceberry, White oak, Bur oak, Black cherry, American elderberry, Arrowwood viburnum are native plants in Ontario that provide food or cover for red-winged blackbirds.
Red-winged Blackbirds in other regions
Other backyard birds in Ontario
Sources
- Red-winged Blackbird — All About Birds, Cornell Lab of Ornithology
- Red-winged Blackbird life history — Cornell Lab of Ornithology
- Red-winged Blackbird — 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.