Mountain Bluebirds in Utah
When mountain bluebirds are present in Utah, when they nest, which native Utah plants feed them, and how to host them in a USDA 4a–9a yard.
- Status in Utah
- Year-round resident
- Nesting window
- May–July
- Broods
- 1–2 per season
- Hardiness zones
- USDA 4a–9a
- Nest box
- 1 9/16 in hole, 5 × 5 in floor, 5–10 ft
When to expect mountain bluebirds in Utah
Mountain Bluebirds live in Utah all year. Cold winters with valley inversions; mountain birds descend to backyards. That makes the cold months the time your yard matters most to them: their winter diet shifts toward juniper berries.
Semi-arid to arid, with the Wasatch Range rising above the Great Basin and red-rock canyon country in the south.
Nesting in Utah
Across Utah, mountain bluebirds typically nest from May–July. Nest site: cavity or nest box. Females lay 4–8 eggs, incubate for 13–14 days, and young leave the nest after 17–21 days.
Hot, dry summers.
- Have boxes cleaned and mounted before April — mountain bluebirds begin prospecting ahead of egg-laying.
- Use a 1 9/16 in entrance on a 5 × 5 in floor, mounted 5–10 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 July.
Native Utah plants that attract mountain bluebirds
Of the regional native plants we track for Utah, these 8 provide food or cover mountain bluebirds use:
Red fruit heads hang on through winter.
Blue fruit on red stems in early fall.
Insect-rich in fall and seed in winter.
Dark summer fruit and heavy caterpillar load.
White fruit and red winter stems; good thicket cover.
Berry-like cones feed bluebirds, solitaires and waxwings in winter.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Acorns for jays and woodpeckers across the southern Rockies.
Feeding mountain bluebirds through the Utah year
Nests at high elevations in open country; takes nest boxes on fence lines.
- Best foods: Mealworms.
- In Utah's winter: Cold winters with valley inversions; mountain birds descend to backyards.
Full diet breakdown for mountain bluebirds · Best feeder for mountain bluebirds
Frequently asked
Are mountain bluebirds in Utah year-round?
Yes. Mountain Bluebirds are year-round residents in Utah.
When do mountain bluebirds nest in Utah?
Nesting in Utah typically runs May–July, with 1–2 per season. Clutches are 4–8 eggs, incubated for 13–14 days.
What native plants attract mountain bluebirds in Utah?
Smooth sumac, Virginia creeper, Tall goldenrod, Chokecherry, Red-osier dogwood, Rocky Mountain juniper, Ponderosa pine, Gambel oak are native plants in Utah that provide food or cover for mountain bluebirds.
What size birdhouse hole do mountain bluebirds need?
1 9/16 in, with a floor of 5 × 5 in mounted 5–10 ft.
Mountain Bluebirds in other regions
Other backyard birds in Utah
Sources
- Mountain Bluebird — All About Birds, Cornell Lab of Ornithology
- Mountain Bluebird life history — Cornell Lab of Ornithology
- Mountain Bluebird — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- eBird region overview and bar charts — Utah
- 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.