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Species · Washington · BBS 2025 Release · 1966–2024

Hammond's Flycatcher Population Trend in Washington

All statesAerial insectivores

Hammond's Flycatcher in Washington has surged: up 152% on the route-weighted index since 1970.

+152%Since 1970
71Routes In State
56Years

Notable Hammond's Flycatcher Trends in Washington

long arc increasecomputed index

Hammond's Flycatcher has surged in Washington: up 152% on the route-weighted index since 1970.

Hammond's Flycatcher Population Forecast in Washington

If the recent trend holds, Hammond's Flycatcher in Washington is projected to stay roughly flat through 2029, near 5.5 (95% range 4.0–6.9). A 5-year backtest shows a typical error of ±16.4%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029
5.5Projected 2029 index
4.0–6.995% range
±16.4%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
20255.23.86.7
20265.33.86.7
20275.43.96.8
20285.44.06.9
20295.54.06.9

Hammond's Flycatcher Survey Routes in Washington

Routes recording Hammond's Flycatcher in Washington.
Newhalem3020241972
Cusick2820241987
Sullivan Lake 22520242000
Glacier2420241976
Blewett Pass2420241992
Sullivan Lk2319991999
No Cascades1920191988
Cougar1820231970
Ronald1820241973
Rimrock1720241968
E. Mt. Adams1720241995
Omak Creek1720241996
Greenwater1220242015
Cloverland1120241993
Hurricane Rg1020241992
Mazama1020221993
Winthrop920221983
Packwood920241975
White Chuck920241992
L Pend O Nwr820241995
Deer Park820121994
Montesand720241992
Mt St Helens720241992
Kendall620241981
Index 2620232014

Hammond's Flycatcher Population Trend in Other States

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