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

Ruby-crowned Kinglet In Sierra Madre Occidental

All regionsSierra Madre OccidentalForest birds

Ruby-crowned Kinglet in Sierra Madre Occidental has surged: up 656% on the route-weighted index since 1975.

+656%Since 1975
12Routes In Region
46Years

Notable Signals

long arc increasecomputed index

Ruby-crowned Kinglet has surged in Sierra Madre Occidental: up 656% on the route-weighted index since 1975.

Forecast

If the recent trend holds, Ruby-crowned Kinglet in Sierra Madre Occidental is projected to stay roughly flat through 2028, near 1.8 (95% range 0.42–3.1). A 5-year backtest shows a typical error of ±38.7%, with 100% of held-out values landing inside the 95% band.

-5%Change by 2028
1.8Projected 2028 index
0.42–3.195% range
±38.7%Backtest error
19682028
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
20241.70.323.0
20251.70.343.0
20261.70.373.0
20271.70.403.1
20281.80.423.1

Routes In Sierra Madre Occidental

Routes recording Ruby-crowned Kinglet in Sierra Madre Occidental.
AlpineARIZONA342023
MaineARIZONA91997
SprucedaleARIZONA82010
Mt. GrahamARIZONA72023
BlueARIZONA31991
Happy JackARIZONA22004
FlagstaffARIZONA12013
Mormon LakeARIZONA11968
WilliamsARIZONA11993
PinetopARIZONA12018
PortalARIZONA11975
Emory PassNEW-MEXICO12000

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