American Kestrels in California
When American are present in California, when they nest, which native California plants feed them, and how to host them in a USDA 5a–11a yard.
- Status in California
- Year-round resident
- Nesting window
- February–June
- Broods
- 1–2 per season
- Hardiness zones
- USDA 5a–11a
- Nest box
- 3 in hole, 8 × 8 in floor, 10–30 ft
When to expect American in California
American Kestrels live in California all year. Wet, mild winters are the green season — the busiest time at coastal feeders as sparrows and hummingbirds settle in. That makes the cold months the time your yard matters most to them.
Mediterranean along the coast and Central Valley, alpine in the Sierra Nevada, and desert in the southeast.
Nesting in California
Across California, American typically nest from February–June. Plan around that window: January for setup, June for clean-out.
Dry summers with little rain from May to October; water and summer-blooming natives matter more than extra seed.
- Have boxes cleaned and mounted before January — 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 California plants that attract American
Of the regional native plants we track for California, these 8 provide food or cover American use:
Insect-rich in fall and seed in winter.
Dark summer fruit and heavy caterpillar load.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Late-season bloom supports insects; seed for sparrows.
Seed pods and insect-rich spring bloom.
Seed pods and cover for Verdins and quail.
Acorns anchor Acorn Woodpecker granaries and scrub-jay caches.
Acorns and a rich insect community in the Pacific Northwest.
Feeding American through the California year
- Top foods: None — hunts in open ground; a kestrel box is the draw.
- In California's winter: Wet, mild winters are the green season — the busiest time at coastal feeders as sparrows and hummingbirds settle in.
Frequently asked
Are American in California year-round?
Yes. American Kestrels are year-round residents in California.
When do American nest in California?
Nesting in California typically runs February–June, with 1–2 per season. Clutches are 3–7 eggs, incubated for 26–32 days.
What native plants attract American in California?
Tall goldenrod, Chokecherry, Ponderosa pine, Rabbitbrush, Palo verde, Velvet mesquite, Coast live oak, Oregon white oak are native plants in California 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 California
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 — California
- USDA Plant Hardiness Zone Map (2023)
- 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.