Red-breasted Nuthatchs in Colorado
When red-breasted nuthatches are present in Colorado, when they nest, which native Colorado plants feed them, and how to host them in a USDA 3a–7b yard.
- Status in Colorado
- Year-round resident
- Nesting window
- May–June
- Broods
- 1 per season
- Hardiness zones
- USDA 3a–7b
- Nest box
- 1 1/4 in hole, 4 × 4 in floor, 5–15 ft
When to expect red-breasted nuthatches in Colorado
Red-breasted Nuthatchs live in Colorado all year. Cold snaps alternate with sunny, dry thaws; heated baths are valuable because natural water freezes nightly. That makes the cold months the time your yard matters most to them: their winter diet shifts toward spruce, fir and pine seeds.
Semi-arid high plains in the east and the Rocky Mountains through the center, with most backyards between 5,000 and 7,000 ft.
Nesting in Colorado
Across Colorado, red-breasted nuthatches typically nest from May–June. Nest site: excavated cavity in soft dead conifers or aspens; uses boxes. Females lay 5–8 eggs, incubate for 12–13 days, and young leave the nest after 18–21 days.
Warm, dry days and cool nights; afternoon storms are common in July and August.
- Have boxes cleaned and mounted before April — red-breasted nuthatches begin prospecting ahead of egg-laying.
- Use a 1 1/4 in entrance on a 4 × 4 in floor, mounted 5–15 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 Colorado plants that attract red-breasted nuthatches
Of the regional native plants we track for Colorado, these 8 provide food or cover red-breasted nuthatches use:
Late nectar for insects and fall seed for sparrows.
Insect-rich in fall and seed in winter.
Dark summer fruit and heavy caterpillar load.
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.
Late-season bloom supports insects; seed for sparrows.
Seed for crossbills, siskins and chickadees.
Feeding red-breasted nuthatches through the Colorado year
Irrupts south in poor cone years; smears sap around its nest hole to deter predators.
- Best foods: Black-oil sunflower, Suet, Peanut hearts.
- In Colorado's winter: Cold snaps alternate with sunny, dry thaws; heated baths are valuable because natural water freezes nightly.
Full diet breakdown for red-breasted nuthatches · Best feeder for red-breasted nuthatches
Frequently asked
Are red-breasted nuthatches in Colorado year-round?
Yes. Red-breasted Nuthatchs are year-round residents in Colorado.
When do red-breasted nuthatches nest in Colorado?
Nesting in Colorado typically runs May–June, with 1 per season. Clutches are 5–8 eggs, incubated for 12–13 days.
What native plants attract red-breasted nuthatches in Colorado?
New England aster, Tall goldenrod, Chokecherry, Rocky Mountain juniper, Ponderosa pine, Gambel oak, Rabbitbrush, Douglas fir are native plants in Colorado that provide food or cover for red-breasted nuthatches.
What size birdhouse hole do red-breasted nuthatches need?
1 1/4 in, with a floor of 4 × 4 in mounted 5–15 ft.
Red-breasted Nuthatchs in other regions
Other backyard birds in Colorado
Sources
- Red-breasted Nuthatch — All About Birds, Cornell Lab of Ornithology
- Red-breasted Nuthatch life history — Cornell Lab of Ornithology
- Red-breasted Nuthatch — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- eBird region overview and bar charts — Colorado
- 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.