BirdAnalyst
Species · Rhode Island · BBS 2025 Release · 1966–2024

Black-billed Cuckoo Population Trend in Rhode Island

All statesGeneralists

Black-billed Cuckoo in Rhode Island has collapsed: down 76% on the route-weighted index since 1971.

-76%Since 1971
5Routes In State
22Years

Notable Black-billed Cuckoo Trends in Rhode Island

long arc declinecomputed index

Black-billed Cuckoo has collapsed in Rhode Island: down 76% on the route-weighted index since 1971.

Black-billed Cuckoo Population Forecast in Rhode Island

If the recent trend holds, Black-billed Cuckoo in Rhode Island is projected to rise about 156% by 2029 — from 0.33 in 2024 to a central estimate of 0.85 (95% range 0.00–2.9). A 5-year backtest shows a typical error of ±304.7%, with 100% of held-out values landing inside the 95% band.

+156%Change by 2029
0.85Projected 2029 index
0.00–2.995% range
±304.7%Backtest error
19682029
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
20250.920.003.0
20260.900.003.0
20270.890.003.0
20280.870.002.9
20290.850.002.9

Black-billed Cuckoo Survey Routes in Rhode Island

Routes recording Black-billed Cuckoo in Rhode Island.
Sachuest Pt219731971
Shannock220211973
Quonset Pt120241968
Wallum Lake120221974
Casimir Pulaski Sf120162016

Black-billed Cuckoo Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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