BirdAnalyst
Species · BCR 34 · BBS 2025 Release · 1966–2024

Grace's Warbler In Sierra Madre Occidental

All regionsSierra Madre OccidentalForest birds

Grace's Warbler in Sierra Madre Occidental has edged down: down 23% on the route-weighted index since 1970.

-23%Since 1970
21Routes In Region
54Years

Notable Signals

No notable trend signals for Grace's Warbler in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Grace's Warbler in Sierra Madre Occidental is projected to stay roughly flat through 2029, near 4.3 (95% range 1.3–7.2). A 5-year backtest shows a typical error of ±14.5%, with 100% of held-out values landing inside the 95% band.

-7%Change by 2029
4.3Projected 2029 index
1.3–7.295% range
±14.5%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
20254.31.47.3
20264.31.47.3
20274.31.37.3
20284.31.37.3
20294.31.37.2

Routes In Sierra Madre Occidental

Routes recording Grace's Warbler in Sierra Madre Occidental.
Happy JackARIZONA622024
Tonto Vill.ARIZONA232021
SprucedaleARIZONA212023
Aztec PeakARIZONA161978
ReserveNEW-MEXICO152023
Mt. GrahamARIZONA142023
RuckerARIZONA112009
AlpineARIZONA102023
Forest LakesARIZONA92024
FlagstaffARIZONA82022
PrescottARIZONA72022
Carr MtnARIZONA62024
PortalARIZONA52024
BlueARIZONA31991
SunizonaARIZONA31975
WilliamsARIZONA32018
MaineARIZONA22021
PinetopARIZONA22022
Vicks PeakNEW-MEXICO22021
Mormon LakeARIZONA11975
Emory PassNEW-MEXICO12024

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