BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

Lewis's Woodpecker In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauForest birds

Lewis's Woodpecker in Southern Rockies / Colorado Plateau has declined: down 32% on the route-weighted index since 1970.

-32%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 →
59Routes 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 →
55YearsYears 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 Lewis's Woodpecker in Southern Rockies / Colorado Plateau. See the full index history below.

Lewis's Woodpecker In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Lewis's Woodpecker in Southern Rockies / Colorado Plateau is projected to fall about 75% by 2030 — from 0.31 in 2025 to a central estimate of 0.08 (95% range 0.00–0.25). A 5-year backtest shows a typical error of ±54.7%, with 80% of held-out values landing inside the 95% band.

-75%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 →
0.08Projected 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 →
0.00–0.2595% 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 →
±54.7%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, Lewis's Woodpecker in Southern Rockies / Colorado Plateau is projected to fall about 75% by 2030 — from 0.31 in 2025 to a central estimate of 0.08 (95% range 0.00–0.25). A 5-year backtest shows a typical error of ±54.7%, with 80% of held-out values landing inside the 95% band.19682030
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 →
20260.090.000.26
20270.090.000.26
20280.080.000.26
20290.080.000.26
20300.080.000.25

Routes In Southern Rockies / Colorado Plateau

Routes recording Lewis's Woodpecker in Southern Rockies / Colorado Plateau.
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 →
Blackhead PkCOLORADO162025
GallinasNEW-MEXICO82025
DoloresCOLORADO41984
PiedraCOLORADO42025
Mcphee Res.COLORADO42025
AspenCOLORADO32023
Colona 2COLORADO32025
Angel Fire 2NEW-MEXICO32025
GreasewoodARIZONA21996
TsaileARIZONA21993
ColonaCOLORADO22014
ParlinCOLORADO22005
PaoniaCOLORADO22018
Groundhog RsCOLORADO22025
CokedaleCOLORADO21998
Gribbles PrkCOLORADO22009
Horse SpgsNEW-MEXICO21996
Angel FireNEW-MEXICO22001
BeaverUTAH22023
JensenUTAH22000
Dixie NfUTAH21997
House RockARIZONA12004
Round RockARIZONA11976
SawmillARIZONA12010
HarmonyCOLORADO11995

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