BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Sharp-shinned Hawk In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionGeneralists

Sharp-shinned Hawk in Prairie Hardwood Transition has held roughly steady: up 8% on the route-weighted index since 1974.

+8%Since 1974TrendPercent 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 →
62Routes 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 →
37YearsYears 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 Sharp-shinned Hawk in Prairie Hardwood Transition. See the full index history below.

Sharp-shinned Hawk In Prairie Hardwood Transition Population Forecast

If the recent trend holds, Sharp-shinned Hawk in Prairie Hardwood Transition is projected to stay roughly flat through 2020, near 0.03 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±218.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2020TrendPercent 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 →
0.03Projected 2020 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.0795% 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 →
±218.4%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, Sharp-shinned Hawk in Prairie Hardwood Transition is projected to stay roughly flat through 2020, near 0.03 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±218.4%, with 100% of held-out values landing inside the 95% band.19702020
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 →
20160.030.000.07
20170.030.000.07
20180.030.000.07
20190.030.000.07
20200.030.000.07

Routes In Prairie Hardwood Transition

Routes recording Sharp-shinned Hawk in Prairie Hardwood Transition.
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 →
Big Blue LkMICHIGAN22011
St StephenMINNESOTA22001
GilmantonWISCONSIN22007
South BendINDIANA11980
MiddleburyINDIANA12000
Columbia CtyINDIANA11997
EllisINDIANA11992
LaporteINDIANA12004
LagrangeINDIANA12012
Big RapidsMICHIGAN11981
NashvilleMICHIGAN11992
CoopersvilleMICHIGAN12000
BeldingMICHIGAN12002
MontereyMICHIGAN11980
RemusMICHIGAN12000
MottvilleMICHIGAN12010
OlaMICHIGAN11975
Maple RapidsMICHIGAN11995
JuniataMICHIGAN11999
DeckervilleMICHIGAN12011
AdairMICHIGAN11981
HungerfordMICHIGAN12007
RochesterMICHIGAN11995
RichmondMICHIGAN12004
Chippewa Lk.MICHIGAN12008

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