American Kestrels in Alberta
When American are present in Alberta, when they nest, which native Alberta plants feed them, and how to host them in a Canada 2a–4b yard.
- Status in Alberta
- Summer breeder
- Nesting window
- April–June
- Broods
- 1–2 per season
- Hardiness zones
- Canada 2a–4b
- Nest box
- 3 in hole, 8 × 8 in floor, 10–30 ft
When to expect American in Alberta
American Kestrels are summer residents in Alberta, arriving shortly before nesting begins in April and leaving after the young are independent.
Continental — prairie in the southeast, aspen parkland in the center, boreal forest in the north and the Rockies in the west.
Nesting in Alberta
Across Alberta, American typically nest from April–June. Plan around that window: March for setup, June for clean-out.
Warm, sunny summers with long days.
- Have boxes cleaned and mounted before March — American begin prospecting ahead of egg-laying.
- Use a 3 in entrance on a 8 × 8 in floor, mounted 10–30 ft.
- Fit a pole baffle or hole guard; ventilation gaps and drainage holes are essential.
- Clean out old nests after each brood and again after June.
Native Alberta plants that attract American
Of the regional native plants we track for Alberta, these 8 provide food or cover American use:
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.
Feeding American through the Alberta year
- Top foods: None — hunts in open ground; a kestrel box is the draw.
- In Alberta's summer: offer water and insect foods; natural food is abundant.
Frequently asked
Are American in Alberta year-round?
No. American Kestrels are summer breeders in Alberta and leave for the winter.
When do American nest in Alberta?
Nesting in Alberta typically runs April–June, with 1–2 per season. Clutches are 3–7 eggs, incubated for 26–32 days.
What native plants attract American in Alberta?
Paper birch, Chokecherry, Rabbitbrush, Douglas fir, Balsam fir, White spruce, Tamarack, Willow (Bebb) are native plants in Alberta that provide food or cover for American.
What size birdhouse hole do American need?
3 in, with a floor of 8 × 8 in mounted 10–30 ft.
American Kestrels in other regions
Other backyard birds in Alberta
Sources
- American Kestrel — All About Birds, Cornell Lab of Ornithology
- American Kestrel life history — Cornell Lab of Ornithology
- American Kestrel — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- 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.