BirdAnalyst
Species · North Dakota · BBS 2025 Release · 1966–2024

Purple Martin Population Trend in North Dakota

All statesAerial insectivores

Purple Martin in North Dakota has surged: up 241% on the route-weighted index since 1969.

+241%Since 1969
31Routes In State
56Years

Notable Purple Martin Trends in North Dakota

long arc increasecomputed index

Purple Martin has surged in North Dakota: up 241% on the route-weighted index since 1969.

Purple Martin Population Forecast in North Dakota

If the recent trend holds, Purple Martin in North Dakota is projected to rise about 30% by 2029 — from 0.93 in 2024 to a central estimate of 1.2 (95% range 0.48–1.9). A 5-year backtest shows a typical error of ±14.8%, with 100% of held-out values landing inside the 95% band.

+30%Change by 2029
1.2Projected 2029 index
0.48–1.995% range
±14.8%Backtest error
19672029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20251.10.431.9
20261.20.451.9
20271.20.461.9
20281.20.471.9
20291.20.481.9

Purple Martin Survey Routes in North Dakota

Routes recording Purple Martin in North Dakota.
Turtle Mtns1920241980
Bowesmont1019951980
Cooperstown620031991
Niles520212000
Loraine520191985
Abercrombie520121967
Forman319921970
Danzig 2320232023
Walcott220211968
Rolla220221969
Carpio220011979
Wild Rose220242004
Powers Lake220182005
Braddock219911991
Edgeley119961982
Emerado120241973
Buchanan119791979
Nash120111980
Lakota120051972
Webster120162016
Dunn Center120242023
Tobacco120072005
Denbigh120132013
Bowman120222022
Zap120242024

Purple Martin Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.