BirdAnalyst
Species · BCR 13 · BBS 2026 Release · 1966–2025

American Crow In Lower Great Lakes / St. Lawrence Plain

All regionsLower Great Lakes / St. Lawrence PlainGeneralists

American Crow in Lower Great Lakes / St. Lawrence Plain has edged up: up 23% on the route-weighted index since 1968.

+23%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 →
86Routes 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 →

No notable trend signals for American Crow in Lower Great Lakes / St. Lawrence Plain. See the full index history below.

American Crow In Lower Great Lakes / St. Lawrence Plain Population Forecast

If the recent trend holds, American Crow in Lower Great Lakes / St. Lawrence Plain is projected to rise about 46% by 2030 — from 33 in 2025 to a central estimate of 48 (95% range 32–64). A 5-year backtest shows a typical error of ±60.4%, with 0% of held-out values landing inside the 95% band.

+46%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 →
48Projected 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 →
32–6495% 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 →
±60.4%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, American Crow in Lower Great Lakes / St. Lawrence Plain is projected to rise about 46% by 2030 — from 33 in 2025 to a central estimate of 48 (95% range 32–64). A 5-year backtest shows a typical error of ±60.4%, with 0% 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 →
2026473163
2027473163
2028473163
2029473263
2030483264

Routes In Lower Great Lakes / St. Lawrence Plain

Routes recording American Crow in Lower Great Lakes / St. Lawrence Plain.
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 →
SheridanNEW-YORK782025
CastileNEW-YORK712025
Mt MorrisNEW-YORK612025
GarrettsvileOHIO591991
OrleansNEW-YORK582025
Ferris CrnrsPENNSYLVANIA572025
NaplesNEW-YORK562025
TeeplevillePENNSYLVANIA562025
CatskillsNEW-YORK552015
NashvilleNEW-YORK542018
Sugar GrovePENNSYLVANIA522025
West BangorNEW-YORK511999
North PownalVERMONT512025
Canadice LNEW-YORK492025
Ballston LkNEW-YORK471995
DuanesburgNEW-YORK472025
ChurchvilleNEW-YORK472025
MendonNEW-YORK462024
WatertownNEW-YORK462012
EspyvillePENNSYLVANIA462025
Oriskany FlsNEW-YORK452025
HamburgNEW-YORK452025
ClintonNEW-YORK452013
OgdensburgNEW-YORK452025
N VictoryNEW-YORK451972

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