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

Red-tailed Hawk In Prairie Potholes

All regionsPrairie PotholesBirds of prey

Red-tailed Hawk in Prairie Potholes has surged: up 78% on the route-weighted index since 1969.

+78%Since 1969TrendPercent 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 →
120Routes 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 →
58YearsYears 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 →

Red-tailed Hawk has surged in Prairie Potholes: up 78% on the route-weighted index since 1969.

Red-tailed Hawk In Prairie Potholes Population Forecast

If the recent trend holds, Red-tailed Hawk in Prairie Potholes is projected to rise about 96% by 2030 — from 1.4 in 2025 to a central estimate of 2.7 (95% range 1.8–3.6). A 5-year backtest shows a typical error of ±80.8%, with 20% of held-out values landing inside the 95% band.

+96%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 →
2.7Projected 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 →
1.8–3.695% 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 →
±80.8%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, Red-tailed Hawk in Prairie Potholes is projected to rise about 96% by 2030 — from 1.4 in 2025 to a central estimate of 2.7 (95% range 1.8–3.6). A 5-year backtest shows a typical error of ±80.8%, with 20% of held-out values landing inside the 95% band.19672030
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 →
20262.61.73.4
20272.61.73.5
20282.61.83.5
20292.71.83.5
20302.71.83.6

Routes In Prairie Potholes

Routes recording Red-tailed Hawk 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 →
CarpioNORTH-DAKOTA112023
SpartaNEBRASKA82021
LoraineNORTH-DAKOTA82019
Chokio NorthMINNESOTA72025
Lake BronsonMINNESOTA62011
Winside 2NEBRASKA62022
Sheyenne LkNORTH-DAKOTA62025
Danzig 2NORTH-DAKOTA62025
OkleeMINNESOTA52021
CooperstownNORTH-DAKOTA52025
GluekMINNESOTA42019
WinsideNEBRASKA42003
WalcottNORTH-DAKOTA42021
EmeradoNORTH-DAKOTA42025
BuchananNORTH-DAKOTA42024
ReganNORTH-DAKOTA42023
AbercrombieNORTH-DAKOTA42012
DenbighNORTH-DAKOTA42025
WashingtonIOWA32025
ZearingIOWA31995
TitonkaIOWA32025
BurchinalIOWA32024
WylieMINNESOTA32024
TracyMINNESOTA32025
GlasgowMONTANA32025

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