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

Grace's Warbler In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauForest birds

Grace's Warbler in Southern Rockies / Colorado Plateau has surged: up 101% on the route-weighted index since 1970.

+101%Since 1970
50Routes In Region
53Years

Notable Signals

long arc increasecomputed index

Grace's Warbler has surged in Southern Rockies / Colorado Plateau: up 101% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Grace's Warbler in Southern Rockies / Colorado Plateau is projected to rise about 33% by 2029 — from 0.67 in 2024 to a central estimate of 0.89 (95% range 0.51–1.3). A 5-year backtest shows a typical error of ±16.7%, with 100% of held-out values landing inside the 95% band.

+33%Change by 2029
0.89Projected 2029 index
0.51–1.395% range
±16.7%Backtest error
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 index95% low95% high
20250.840.461.2
20260.850.471.2
20270.860.491.2
20280.880.501.3
20290.890.511.3

Routes In Southern Rockies / Colorado Plateau

Routes recording Grace's Warbler in Southern Rockies / Colorado Plateau.
SawmillARIZONA372014
Bluewater LakeNEW-MEXICO302021
TsaileARIZONA282023
Mcphee Res.COLORADO162024
Haycamp MesaCOLORADO162024
GallinasNEW-MEXICO122021
Mt. TaylorNEW-MEXICO102012
CebollaNEW-MEXICO92023
Dry ParkARIZONA72024
VallecitosNEW-MEXICO72024
Mt. Taylor 2NEW-MEXICO72024
NuclaCOLORADO62024
Angel Fire 2NEW-MEXICO62024
Pagosa SpgsCOLORADO51975
Bryce CanyonUTAH52024
Cortez 2COLORADO42015
Ojo SarcoNEW-MEXICO42024
ZeniffARIZONA31968
Navajo LakeUTAH32022
Dixie NfUTAH32024
DeltaCOLORADO22021
DoloresCOLORADO21969
CortezCOLORADO22006
Blackhead PkCOLORADO21998
CokedaleCOLORADO22024

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