BirdAnalyst
Species · Montana · BBS 2025 Release · 1966–2024

Veery Population Trend in Montana

All statesForest birds

Veery in Montana has fallen sharply: down 66% on the route-weighted index since 1970.

-66%Since 1970TrendPercent 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 →
42Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Veery Trends in MontanaNotable 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 declinecomputed 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 →

Veery has fallen sharply in Montana: down 66% on the route-weighted index since 1970.

Veery Population Forecast in Montana

If the recent trend holds, Veery in Montana is projected to fall about 100% by 2029 — from 0.74 in 2024 to a central estimate of 0.00 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±123.4%, with 40% of held-out values landing inside the 95% band.

-100%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 →
0.00Projected 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 →
0.00–1.095% 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 →
±123.4%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, Veery in Montana is projected to fall about 100% by 2029 — from 0.74 in 2024 to a central estimate of 0.00 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±123.4%, with 40% 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 →
20250.000.001.0
20260.000.001.0
20270.000.001.0
20280.000.001.0
20290.000.001.0

Veery Survey Routes in Montana

Routes recording Veery in Montana.
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 →
Chestnut1620241968
East Glacier Park1620242015
Cleveland1120241979
Pagil Gulch720192015
Clyde Park520242018
Clinton420241975
Elliston420241968
St. Mary 2420242009
St Mary320081970
Twin Bridges319761968
Heart Butte320242018
Painted Rock319981998
Libby Dam220131979
Highwood220191975
Flatwillow220072007
Laurel219831983
Kalispell119861969
Flatwillow 2120232018
Logan Pass120171992
Victor120061994
Glen119971977
Willow Creek 2119871985
Greenough120032002
Pryor Mtn.120171995
St Regis120131977

Veery Population Trend in Other States

alabamaalaskacoloradoconnecticutdelawaregeorgiaidahoillinoisindianakentuckymainemarylandmassachusettsmichiganminnesotanebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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