American Kestrels in Delaware
When American are present in Delaware, when they nest, which native Delaware plants feed them, and how to host them in a USDA 7a–8a yard.
- Status in Delaware
- Year-round resident
- Nesting window
- March–June
- Broods
- 1–2 per season
- Hardiness zones
- USDA 7a–8a
- Nest box
- 3 in hole, 8 × 8 in floor, 10–30 ft
When to expect American in Delaware
American Kestrels live in Delaware all year. Mild winters with modest snow; coastal marshes draw huge numbers of wintering sparrows and blackbirds. That makes the cold months the time your yard matters most to them.
Humid subtropical to temperate coastal plain between Delaware Bay and the Atlantic.
Nesting in Delaware
Across Delaware, American typically nest from March–June. Plan around that window: February for setup, June for clean-out.
Hot, humid summers; bay-shore woodlots are important migrant stopovers in May.
- Have boxes cleaned and mounted before February — 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 Delaware plants that attract American
Of the regional native plants we track for Delaware, these 8 provide food or cover American use:
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.
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.
Lipid-rich red fruit fuels fall migrants.
Late nectar for insects and fall seed for sparrows.
Feeding American through the Delaware year
- Top foods: None — hunts in open ground; a kestrel box is the draw.
- In Delaware's winter: Mild winters with modest snow; coastal marshes draw huge numbers of wintering sparrows and blackbirds.
Frequently asked
Are American in Delaware year-round?
Yes. American Kestrels are year-round residents in Delaware.
When do American nest in Delaware?
Nesting in Delaware typically runs March–June, with 1–2 per season. Clutches are 3–7 eggs, incubated for 26–32 days.
What native plants attract American in Delaware?
Flowering dogwood, Serviceberry, White oak, Black cherry, American elderberry, Arrowwood viburnum, Spicebush, New England aster are native plants in Delaware 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 Delaware
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 — Delaware
- 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.