Yellow-rumped Warblers in Colorado
When yellow-rumped warblers 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
- Summer breeder
- Nesting window
- May–July
- Broods
- 1–2 per season
- Hardiness zones
- USDA 3a–7b
When to expect yellow-rumped warblers in Colorado
Yellow-rumped Warblers are summer residents in Colorado, arriving shortly before nesting begins in May and leaving after the young are independent. Through the season they feed on caterpillars and flies.
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, yellow-rumped warblers typically nest from May–July. Nest site: cup on a horizontal conifer branch. Females lay 1–6 eggs, incubate for 12–13 days, and young leave the nest after 10–14 days.
Warm, dry days and cool nights; afternoon storms are common in July and August.
- Yellow-rumped Warblers don't use nest boxes. Keep dense native shrubs and trees such as smooth sumac, virginia creeper, pin cherry for nest sites.
- Delay heavy pruning of shrubs until after July.
Native Colorado plants that attract yellow-rumped warblers
Of the regional native plants we track for Colorado, these 8 provide food or cover yellow-rumped warblers use:
Red fruit heads hang on through winter.
Blue fruit on red stems in early fall.
Late nectar for insects and fall seed for sparrows.
Insect-rich in fall and seed in winter.
Fast-growing northern cherry with midsummer fruit.
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.
Feeding yellow-rumped warblers through the Colorado year
The warbler most likely at a winter feeder; suet and wax myrtle bring them in.
- Best foods: Suet, Hulled sunflower.
- In Colorado's summer: offer water and insect foods; natural food is abundant.
Full diet breakdown for yellow-rumped warblers · Best feeder for yellow-rumped warblers
Frequently asked
Are yellow-rumped warblers in Colorado year-round?
No. Yellow-rumped Warblers are summer breeders in Colorado and leave for the winter.
When do yellow-rumped warblers nest in Colorado?
Nesting in Colorado typically runs May–July, with 1–2 per season. Clutches are 1–6 eggs, incubated for 12–13 days.
What native plants attract yellow-rumped warblers in Colorado?
Smooth sumac, Virginia creeper, New England aster, Tall goldenrod, Pin cherry, Chokecherry, Red-osier dogwood, Rocky Mountain juniper are native plants in Colorado that provide food or cover for yellow-rumped warblers.
Yellow-rumped Warblers in other regions
Other backyard birds in Colorado
Sources
- Yellow-rumped Warbler — All About Birds, Cornell Lab of Ornithology
- Yellow-rumped Warbler life history — Cornell Lab of Ornithology
- Yellow-rumped Warbler — Audubon Guide to North American Birds
- 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.