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

Red Crossbill In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Red Crossbill in Southern Rockies / Colorado Plateau has surged: up 380% on the route-weighted index since 1971.

+380%Since 1971
127Routes In Region
54Years

Notable Signals

long arc increasecomputed index

Red Crossbill has surged in Southern Rockies / Colorado Plateau: up 380% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Red Crossbill in Southern Rockies / Colorado Plateau is projected to fall about 22% by 2029 — from 2.6 in 2024 to a central estimate of 2.0 (95% range 0.00–4.2). A 5-year backtest shows a typical error of ±64.2%, with 100% of held-out values landing inside the 95% band.

-22%Change by 2029
2.0Projected 2029 index
0.00–4.295% range
±64.2%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
20252.00.004.2
20262.00.004.2
20272.00.004.2
20282.00.004.2
20292.00.004.2

Routes In Southern Rockies / Colorado Plateau

Routes recording Red Crossbill in Southern Rockies / Colorado Plateau.
Comanche PkCOLORADO592024
Mcphee Res.COLORADO482024
Haycamp MesaCOLORADO472024
Fletcher PkWYOMING402016
SawmillARIZONA382008
PowderhornCOLORADO372018
FayetteUTAH301993
Buffalo ParkCOLORADO242023
Mount EvansCOLORADO232024
Pinos CreekCOLORADO211990
Rollins PassCOLORADO212022
Stillwater PassCOLORADO182007
RichfieldUTAH182000
CounselorNEW-MEXICO172001
WarbonnetWYOMING172024
PinonCOLORADO162024
Ryan ParkWYOMING152023
Mt. TaylorNEW-MEXICO142012
FlattopsCOLORADO122014
Wasatch NfUTAH112024
Dry ParkARIZONA102024
Yellowjacket PassCOLORADO92024
ClaunchNEW-MEXICO91999
Heber Mtn.UTAH92024
GuffeyCOLORADO82024

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