When do western tanagers arrive in Colorado?
The Western Tanager is a summer breeder in Colorado — here is when to expect it, when it leaves, and how to be ready.
Western Tanager timing in Colorado
- Arrives
- Around April
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- May–July
- Present roughly
- April–August
In Colorado, western tanagers are present through the warm months, arriving around April and heading south again by August.
These windows are set by latitude: Colorado sits in the middle part of this species' range, so timing here tracks the continental average closely. In any given year, weather can move the first arrivals by a week or two either way.
Month by month in this state
Highlighted months are when western tanagers are expected in Colorado. The edges of the window are the interesting weeks — first arrivals and last departures vary most from year to year.
Getting ready before they arrive
The week before April is the time to act. Have feeders cleaned, filled and out by early April — the first western tanagers into Colorado are scouting for reliable food, and a station that's ready early gets added to their route.
Once nesting begins around May, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.
What western tanagers eat while they're here
- Wasps, beetles, caterpillars and bees
Drops from the treetops to oranges, jelly and birdbaths during spring migration, especially in dry country.
Full Western Tanager diet guide → · Best feeder for western tanagers →
Native plants that hold western tanagers in Colorado
Food keeps a migrant for a day; habitat keeps it for the season. These Colorado-native plants are known to attract western tanagers:
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.
Keep exploring
Frequently asked
When do western tanagers arrive in Colorado?
western tanagers typically arrive in Colorado around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.
When do western tanagers leave Colorado?
Most western tanagers have left Colorado by August. They spend the winter farther south and return the following spring.
Do western tanagers stay in Colorado all year?
No — in Colorado the Western Tanager is a summer breeder, present roughly April–August. Outside that window it is rarely seen in the state.
What should I put out before western tanagers arrive in Colorado?
Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: wasps, beetles, caterpillars and bees.
Sources
- Western Tanager — All About Birds, Cornell Lab of Ornithology
- Western Tanager life history — Cornell Lab of Ornithology
- Western Tanager — 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.