Eastern Bluebirds in Oklahoma
When bluebirds are present in Oklahoma, when they nest, which native Oklahoma plants feed them, and how to host them in a USDA 6a–8a yard.
- Status in Oklahoma
- Year-round resident
- Nesting window
- April–August
- Broods
- 1–3 per season
- Hardiness zones
- USDA 6a–8a
- Nest box
- 1 1/2 in round (1 9/16 in for Mountain/Western overlap) hole, 5 × 5 in floor, 4–6 ft on a baffled pole
When to expect bluebirds in Oklahoma
Eastern Bluebirds live in Oklahoma all year. Mild winters with occasional severe ice storms. That makes the cold months the time your yard matters most to them: their winter diet shifts toward dogwood, sumac, holly, juniper and hackberry fruit; mealworms offered at feeders.
Humid in the forested east, semi-arid in the western plains and Panhandle.
Nesting in Oklahoma
Across Oklahoma, bluebirds typically nest from April–August. Nest site: secondary cavity nester — old woodpecker holes and nest boxes in open habitat. Females lay 2–7 eggs, incubate for 11–19 days, and young leave the nest after 15–20 days.
Hot summers with strong winds; water is especially valuable in the west.
- Have boxes cleaned and mounted before March — bluebirds begin prospecting ahead of egg-laying.
- Use a 1 1/2 in round (1 9/16 in for Mountain/Western overlap) entrance on a 5 × 5 in floor, mounted 4–6 ft on a baffled pole.
- Fit a pole baffle or hole guard; ventilation gaps and drainage holes are essential.
- Clean out old nests after each brood and again after August.
Native Oklahoma plants that attract bluebirds
Of the regional native plants we track for Oklahoma, these 8 provide food or cover bluebirds use:
Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.
Dense evergreen roost cover and bluish 'berries' eaten through winter.
Early-summer berries arrive exactly when nestlings are being fed.
Red fruit heads hang on through winter.
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.
Feeding bluebirds through the Oklahoma year
Bluebirds hunt from perches over short grass. Put mealworm feeders in the open, near a low perch, and offer small amounts at the same time each day.
- Best foods: Live or dried mealworms, Suet nuggets / insect-suet dough, Chopped native fruit.
- Avoid: Loose seed mixes — bluebirds rarely eat seed.
- In Oklahoma's winter: Mild winters with occasional severe ice storms.
Full diet breakdown for bluebirds · Best feeder for bluebirds
Frequently asked
Are bluebirds in Oklahoma year-round?
Yes. Eastern Bluebirds are year-round residents in Oklahoma.
When do bluebirds nest in Oklahoma?
Nesting in Oklahoma typically runs April–August, with 1–3 per season. Clutches are 2–7 eggs, incubated for 11–19 days.
What native plants attract bluebirds in Oklahoma?
Flowering dogwood, Eastern red cedar, Serviceberry, Smooth sumac, White oak, Bur oak, Black cherry, American elderberry are native plants in Oklahoma that provide food or cover for bluebirds.
What size birdhouse hole do bluebirds need?
1 1/2 in round (1 9/16 in for Mountain/Western overlap), with a floor of 5 × 5 in mounted 4–6 ft on a baffled pole.
Eastern Bluebirds in other regions
Other backyard birds in Oklahoma
Sources
- Eastern Bluebird — All About Birds, Cornell Lab of Ornithology
- Eastern Bluebird life history — Cornell Lab of Ornithology
- Eastern Bluebird — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- eBird region overview and bar charts — Oklahoma
- 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.