BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Williamson's Sapsucker In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauForest birds

Williamson's Sapsucker in Southern Rockies / Colorado Plateau has surged: up 496% on the route-weighted index since 1972.

+496%Since 1972
80Routes In Region
52Years

Notable Signals

long arc increasecomputed index

Williamson's Sapsucker has surged in Southern Rockies / Colorado Plateau: up 496% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Williamson's Sapsucker in Southern Rockies / Colorado Plateau is projected to rise about 43% by 2029 — from 0.20 in 2024 to a central estimate of 0.29 (95% range 0.12–0.45). A 5-year backtest shows a typical error of ±25%, with 100% of held-out values landing inside the 95% band.

+43%Change by 2029
0.29Projected 2029 index
0.12–0.4595% range
±25%Backtest error
19692029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.280.110.44
20260.280.110.44
20270.280.120.45
20280.280.120.45
20290.290.120.45

Routes In Southern Rockies / Colorado Plateau

Routes recording Williamson's Sapsucker in Southern Rockies / Colorado Plateau.
TsaileARIZONA62023
PowderhornCOLORADO62023
Dixie NfUTAH62024
Pinos CreekCOLORADO51989
FlattopsCOLORADO52016
Deadman Rd.COLORADO32024
Wet Mtns.COLORADO32018
Comanche PkCOLORADO32022
ComoCOLORADO32016
Marshall PasCOLORADO32014
Cochetopa PassCOLORADO32007
Haycamp MesaCOLORADO32024
BeckUTAH31973
Heber Mtn.UTAH32022
Lost Cr. ResUTAH32009
Red Spur Mtn.UTAH32023
SawmillARIZONA22006
Pagosa SpgsCOLORADO21982
Lost LakeCOLORADO21999
Blackhead PkCOLORADO22014
Buffalo ParkCOLORADO22023
Fox CreekCOLORADO22011
CokedaleCOLORADO22003
Stillwater PassCOLORADO22009
LudlowCOLORADO22011

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