BirdAnalyst
Species · Washington · BBS 2025 Release · 1966–2024

Gray Flycatcher Population Trend in Washington

All statesAerial insectivores

Gray Flycatcher in Washington has surged: up 451% on the route-weighted index since 1991.

+451%Since 1991
15Routes In State
28Years

Notable Gray Flycatcher Trends in Washington

long arc increasecomputed index

Gray Flycatcher has surged in Washington: up 451% on the route-weighted index since 1991.

Gray Flycatcher Population Forecast in Washington

If the recent trend holds, Gray Flycatcher in Washington is projected to fall about 50% by 2029 — from 0.33 in 2024 to a central estimate of 0.17 (95% range 0.04–0.29). A 5-year backtest shows a typical error of ±47.2%, with 60% of held-out values landing inside the 95% band.

-50%Change by 2029
0.17Projected 2029 index
0.04–0.2995% range
±47.2%Backtest error
19812029
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
20250.150.030.28
20260.150.030.28
20270.160.030.28
20280.160.040.29
20290.170.040.29

Gray Flycatcher Survey Routes in Washington

Routes recording Gray Flycatcher in Washington.
Lake Chelan920242002
Ellensburg420241981
Deer Park420151998
Omak Creek320242007
Pomeroy220192019
Ronald219951991
Wilbur220241999
Tonasket220072007
Twisp119871987
Turnbull Nwr120232003
Spring Lake120171992
Reardan120242024
Yakima119961996
Rimrock120182010
Blewett Pass120142014

Gray Flycatcher Population Trend in Other States

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