When do bobolinks arrive in Idaho?
The Bobolink is a summer breeder in Idaho — here is when to expect it, when it leaves, and how to be ready.
Bobolink timing in Idaho
- Arrives
- Around April
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- May–July
- Present roughly
- April–August
In Idaho, bobolinks are present through the warm months, arriving around April and heading south again by August.
These windows are set by latitude: Idaho 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 bobolinks are expected in Idaho. 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 bobolinks into Idaho 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 bobolinks eat while they're here
- Grasshoppers, caterpillars and grass seeds
Needs hayfields left uncut until mid-July; delaying the first cut is the single best thing for them.
Native plants that hold bobolinks in Idaho
Food keeps a migrant for a day; habitat keeps it for the season. These Idaho-native plants are known to attract bobolinks:
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.
Dark summer fruit and heavy caterpillar load.
Sweet dry fruit on the branch all winter.
Keep exploring
Frequently asked
When do bobolinks arrive in Idaho?
bobolinks typically arrive in Idaho around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.
When do bobolinks leave Idaho?
Most bobolinks have left Idaho by August. They spend the winter farther south and return the following spring.
Do bobolinks stay in Idaho all year?
No — in Idaho the Bobolink is a summer breeder, present roughly April–August. Outside that window it is rarely seen in the state.
What should I put out before bobolinks arrive in Idaho?
Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: grasshoppers, caterpillars and grass seeds.
Sources
- Bobolink — All About Birds, Cornell Lab of Ornithology
- Bobolink life history — Cornell Lab of Ornithology
- Bobolink — Audubon Guide to North American Birds
- eBird region overview and bar charts — Idaho
- 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.