BirdAnalyst
Species · BCR 12 · BBS 2026 Release · 1966–2025

Rock Pigeon In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

Rock Pigeon in Boreal Hardwood Transition has surged: up 252% on the route-weighted index since 1968.

+252%Since 1968TrendPercent 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 →
91Routes 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 →
59YearsYears 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 →

Rock Pigeon has surged in Boreal Hardwood Transition: up 252% on the route-weighted index since 1968.

Rock Pigeon In Boreal Hardwood Transition Population Forecast

If the recent trend holds, Rock Pigeon in Boreal Hardwood Transition is projected to rise about 66% by 2030 — from 2.0 in 2025 to a central estimate of 3.4 (95% range 1.4–5.4). A 5-year backtest shows a typical error of ±102%, with 60% of held-out values landing inside the 95% band.

+66%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 →
3.4Projected 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 →
1.4–5.495% 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 →
±102%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, Rock Pigeon in Boreal Hardwood Transition is projected to rise about 66% by 2030 — from 2.0 in 2025 to a central estimate of 3.4 (95% range 1.4–5.4). A 5-year backtest shows a typical error of ±102%, with 60% of held-out values landing inside the 95% band.19662030
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 →
20263.31.35.2
20273.31.35.3
20283.31.35.3
20293.31.45.3
20303.41.45.4

Routes In Boreal Hardwood Transition

Routes recording Rock Pigeon in Boreal 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 →
Lake CityMICHIGAN362022
BashawWISCONSIN292025
WausaukeeWISCONSIN272025
HerronMICHIGAN172013
IrmaWISCONSIN162023
Brocky LakeMICHIGAN152025
PickfordMICHIGAN132025
FloodwoodMINNESOTA132025
BrainerdMINNESOTA132024
Traverse CtyMICHIGAN111992
Pleasant Valley 2MICHIGAN102025
HermanMICHIGAN92022
HarriettaMICHIGAN92019
Crystal FlsMICHIGAN82025
Washington IWISCONSIN82000
Weirgor SpringsWISCONSIN82024
Iron RiverWISCONSIN72025
WilsonMICHIGAN62009
BackusMINNESOTA62024
ChaffeyWISCONSIN62025
CunardMICHIGAN52021
TahquamenonMICHIGAN51980
OberlinMICHIGAN52011
Island LakeMINNESOTA52016
MahtowaMINNESOTA52017

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