BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

Common Raven In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

Common Raven in Badlands and Prairies has surged: up 50× on the route-weighted index since 1972.

50×Since 1972TrendPercent 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 →
40Routes 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 →
41YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Common Raven has surged in Badlands and Prairies: up 50× on the route-weighted index since 1972.

Forecast

If the recent trend holds, Common Raven in Badlands and Prairies is projected to fall about 61% by 2029 — from 3.0 in 2024 to a central estimate of 1.1 (95% range 0.25–2.0). A 5-year backtest shows a typical error of ±52.1%, with 60% of held-out values landing inside the 95% band.

-61%Change by 2029TrendPercent 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 →
1.1Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.25–2.095% 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 →
±52.1%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 Badlands and Prairies is projected to fall about 61% by 2029 — from 3.0 in 2024 to a central estimate of 1.1 (95% range 0.25–2.0). A 5-year backtest shows a typical error of ±52.1%, with 60% of held-out values landing inside the 95% band.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 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 →
20251.00.151.9
20261.10.182.0
20271.10.202.0
20281.10.232.0
20291.10.252.0

Routes In Badlands and Prairies

Routes recording Common Raven in Badlands and Prairies.
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 →
KayceeWYOMING952024
Wheat BasinMONTANA132024
Two DotMONTANA112024
LeroyMONTANA102024
BrusettMONTANA102024
ShawmutMONTANA82024
BucknumWYOMING82024
CusterMONTANA72022
Chuffey SpringMONTANA72024
DaytonWYOMING72024
HighwoodMONTANA62024
IngomarMONTANA62016
Reed PointMONTANA62024
Flatwillow 2MONTANA62023
Jordan SouthMONTANA62024
RoundupMONTANA62024
Maynard CouleeMONTANA52024
WinnettMONTANA42023
JordanMONTANA32024
SeelyWYOMING32000
RoyMONTANA22021
ForsythMONTANA22023
BrandenbergMONTANA22019
WinifredMONTANA22023
LindsayMONTANA22018

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