When do bank swallows arrive in North Dakota?
The Bank Swallow is a summer breeder in North Dakota — here is when to expect it, when it leaves, and how to be ready.
Bank Swallow timing in North Dakota
- Arrives
- Around May
- Leaves
- By August
- Status here
- Summer breeder
- Nesting season
- June–July
- Present roughly
- May–August
In North Dakota, bank swallows are present through the warm months, arriving around May and heading south again by August.
These windows are set by latitude: North Dakota 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 bank swallows are expected in North Dakota. 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 bank swallows into North Dakota 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 bank swallows eat while they're here
- Flies, mayflies, beetles and winged ants
Digs nest burrows in vertical sand banks in big colonies; needs eroding riverbanks or sand pits.
Full Bank Swallow diet guide → · Best feeder for bank swallows →
Native plants that hold bank swallows in North Dakota
Food keeps a migrant for a day; habitat keeps it for the season. These North Dakota-native plants are known to attract bank swallows:
Drought-hardy prairie oak with large acorns and a heavy insect load.
Summer fruit and one of the top caterpillar host trees.
Late-summer berry clusters taken by over 40 bird species.
Late nectar for insects and fall seed for sparrows.
Insect-rich in fall and seed in winter.
Catkin seed feeds redpolls and siskins all winter.
Hosts hundreds of caterpillar species; spring flowers draw early insects.
Dark summer fruit and heavy caterpillar load.
Keep exploring
Frequently asked
When do bank swallows arrive in North Dakota?
bank swallows typically arrive in North Dakota around May, with nesting underway by June. Timing can shift a week or two with the weather in any given year.
When do bank swallows leave North Dakota?
Most bank swallows have left North Dakota by August. They spend the winter farther south and return the following spring.
Do bank swallows stay in North Dakota all year?
No — in North Dakota the Bank Swallow is a summer breeder, present roughly May–August. Outside that window it is rarely seen in the state.
What should I put out before bank swallows arrive in North Dakota?
Have feeders up and clean by early May — first arrivals scout reliable food sources. Good offerings for this species: flies, mayflies, beetles and winged ants.
Sources
- Bank Swallow — All About Birds, Cornell Lab of Ornithology
- Bank Swallow life history — Cornell Lab of Ornithology
- Bank Swallow — Audubon Guide to North American Birds
- eBird region overview and bar charts — North Dakota
- 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.