BirdAnalyst
Species · BCR 11 · BBS 2026 Release · 1966–2025

Common Raven In Prairie Potholes

All regionsPrairie PotholesGeneralists

Common Raven in Prairie Potholes has surged: up 24× on the route-weighted index since 1983.

24×Since 1983TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
36Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
39YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Common Raven in Prairie Potholes. See the full index history below.

Common Raven In Prairie Potholes Population Forecast

If the recent trend holds, Common Raven in Prairie Potholes is projected to rise about 70% by 2030 — from 0.34 in 2025 to a central estimate of 0.57 (95% range 0.29–0.85). A 5-year backtest shows a typical error of ±27%, with 100% of held-out values landing inside the 95% band.

+70%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.57Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.29–0.8595% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±27%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Common Raven in Prairie Potholes is projected to rise about 70% by 2030 — from 0.34 in 2025 to a central estimate of 0.57 (95% range 0.29–0.85). A 5-year backtest shows a typical error of ±27%, with 100% of held-out values landing inside the 95% band.19792030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.520.240.80
20270.530.250.81
20280.550.270.83
20290.560.280.84
20300.570.290.85

Routes In Prairie Potholes

Routes recording Common Raven in Prairie Potholes.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Lake BronsonMINNESOTA182011
OkleeMINNESOTA82021
Sheyenne LkNORTH-DAKOTA72024
VirgelleMONTANA52025
BowesmontNORTH-DAKOTA52013
BeltramiMINNESOTA42016
NashNORTH-DAKOTA42016
WebsterNORTH-DAKOTA42021
WylieMINNESOTA32024
GryglaMINNESOTA32017
ClevelandMONTANA32025
WhitlashMONTANA32024
GlentanaMONTANA32025
WestbyMONTANA32021
LoraineNORTH-DAKOTA32019
Powers LakeNORTH-DAKOTA32023
Turtle MtnsNORTH-DAKOTA32025
ErieMINNESOTA22017
BadgerMINNESOTA22018
Great FallsMONTANA22025
ShelbyMONTANA22025
ChinookMONTANA22025
GlyndonMINNESOTA12024
LockhartMINNESOTA12025
Hay LakeMONTANA12025

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.