When do black-headed grosbeaks arrive in Montana?
The Black-headed Grosbeak is a summer breeder in Montana — here is when to expect it, when it leaves, and how to be ready.
Black-headed Grosbeak timing in Montana
- Arrives
- Around May
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- June–July
- Present roughly
- May–August
In Montana, black-headed grosbeaks are present through the warm months, arriving around May and heading south again by August.
These windows are set by latitude: Montana sits in the middle part of this species' range, so timing here runs later than the continental average — the season starts later this far north and the birds wait for it. 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 black-headed grosbeaks are expected in Montana. 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 May is the time to act. Have feeders cleaned, filled and out by early May — the first black-headed grosbeaks into Montana are scouting for reliable food, and a station that's ready early gets added to their route.
Once nesting begins around June, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.
What black-headed grosbeaks eat while they're here
- Beetles and caterpillars
One of few birds that eats monarch butterflies; a summer feeder regular in the West.
Full Black-headed Grosbeak diet guide → · Best feeder for black-headed grosbeaks →
Native plants that hold black-headed grosbeaks in Montana
Food keeps a migrant for a day; habitat keeps it for the season. These Montana-native plants are known to attract black-headed grosbeaks:
Red fruit heads hang on through winter.
Drought-hardy prairie oak with large acorns and a heavy insect load.
Tubular flowers for hummingbirds and seed heads for finches.
Prolific seed heads for finches and sparrows.
Annual native sunflower — the original feeder seed.
Native bunchgrass; winter seed and ground cover for sparrows and juncos.
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Keep exploring
Frequently asked
When do black-headed grosbeaks arrive in Montana?
black-headed grosbeaks typically arrive in Montana around May, with nesting underway by June. Timing can shift a week or two with the weather in any given year.
When do black-headed grosbeaks leave Montana?
Most black-headed grosbeaks have left Montana by August. They spend the winter farther south and return the following spring.
Do black-headed grosbeaks stay in Montana all year?
No — in Montana the Black-headed Grosbeak is a summer breeder, present roughly May–August. Outside that window it is rarely seen in the state.
What should I put out before black-headed grosbeaks arrive in Montana?
Have feeders up and clean by early May — first arrivals scout reliable food sources. Good offerings for this species: beetles and caterpillars.
Sources
- Black-headed Grosbeak — All About Birds, Cornell Lab of Ornithology
- Black-headed Grosbeak life history — Cornell Lab of Ornithology
- Black-headed Grosbeak — Audubon Guide to North American Birds
- eBird region overview and bar charts — Montana
- 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.