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

Black-billed Cuckoo Population Trend in North Dakota

All statesGeneralists

Black-billed Cuckoo in North Dakota has fallen sharply: down 68% on the route-weighted index since 1969.

-68%Since 1969
48Routes In State
56Years

Notable Black-billed Cuckoo Trends in North Dakota

long arc declinecomputed index

Black-billed Cuckoo has fallen sharply in North Dakota: down 68% on the route-weighted index since 1969.

Black-billed Cuckoo Population Forecast in North Dakota

If the recent trend holds, Black-billed Cuckoo in North Dakota is projected to fall about 100% by 2029 — from 0.33 in 2024 to a central estimate of 0.00 (95% range 0.00–1.1). A 5-year backtest shows a typical error of ±160.1%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.195% range
±160.1%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
20250.000.001.1
20260.000.001.1
20270.000.001.1
20280.000.001.1
20290.000.001.1

Black-billed Cuckoo Survey Routes in North Dakota

Routes recording Black-billed Cuckoo in North Dakota.
Kempton820121969
Tobacco820061968
Lark519821971
Nash420101983
Walcott220211967
Emerado220241973
Cooperstown220231970
Rolla220021971
Niles220001989
Stanley220071967
Zap219981967
Roosevelt Pk220161987
Golva220071979
Douglas Crk220101982
Sheyenne Lk220101980
Turtle Mtns220191980
Carson219971988
Solen220242008
Forman120181973
Sydney119811967
Edgeley120241980
Lake George120061971
Danzig119931991
Wimbledon120151981
Horsehead Lk120061980

Black-billed Cuckoo Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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