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Species · Nevada · BBS 2025 Release · 1966–2024

MacGillivray's Warbler Population Trend in Nevada

All statesForest birds

MacGillivray's Warbler in Nevada has fallen sharply: down 50% on the route-weighted index since 1993.

-50%Since 1993
13Routes In State
33Years

Notable MacGillivray's Warbler Trends in Nevada

long arc declinecomputed index

MacGillivray's Warbler has fallen sharply in Nevada: down 50% on the route-weighted index since 1993.

MacGillivray's Warbler Population Forecast in Nevada

If the recent trend holds, MacGillivray's Warbler in Nevada is projected to rise about 834% by 2029 — from 0.11 in 2024 to a central estimate of 1.00 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±2006.6%, with 0% of held-out values landing inside the 95% band.

+834%Change by 2029
1.00Projected 2029 index
0.00–2.295% range
±2006.6%Backtest error
19882029
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
20250.940.002.2
20260.960.002.2
20270.970.002.2
20280.990.002.2
20291.000.002.2

MacGillivray's Warbler Survey Routes in Nevada

Routes recording MacGillivray's Warbler in Nevada.
Austin3620182008
Ruby Valley920011999
Hawthorne720011997
Jarbidge620151997
Comins Lake620162005
Ruby Valley 2320182004
Humboldt Nf220191994
Humboldt Nf 2220242021
Toiyabe Nf220182013
Dinner Sta119931991
Fish Creek120012001
Gardnerville120032003
Willis120241988

MacGillivray's Warbler Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomontananew-mexicooregonsouth-dakotatexasutahwashingtonwyoming

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