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

Dusky Flycatcher Population Trend in California

All statesAerial insectivores

Dusky Flycatcher in California has surged: up 245% on the route-weighted index since 1971.

+245%Since 1971
109Routes In State
55Years

Notable Dusky Flycatcher Trends in California

long arc increasecomputed index

Dusky Flycatcher has surged in California: up 245% on the route-weighted index since 1971.

Dusky Flycatcher Population Forecast in California

If the recent trend holds, Dusky Flycatcher in California is projected to rise about 147% by 2029 — from 1.1 in 2024 to a central estimate of 2.6 (95% range 1.4–3.8). A 5-year backtest shows a typical error of ±142.8%, with 0% of held-out values landing inside the 95% band.

+147%Change by 2029
2.6Projected 2029 index
1.4–3.895% range
±142.8%Backtest error
19692029
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
20252.51.33.7
20262.51.33.7
20272.61.43.7
20282.61.43.8
20292.61.43.8

Dusky Flycatcher Survey Routes in California

Routes recording Dusky Flycatcher in California.
Hackamore3720102000
Crestview3020241997
Pine Mountain2220171998
Goumaz2020111997
Pilot Creek1919961994
Tahoe Nf1719941987
Dirigio1720141999
Macdoel1520191972
South Fork Mtn1520222000
Valyermo1420191971
Hat Creek1320181973
Johnsville1220241975
Greenhorn Mt1220081971
Yolla Bolly1119731973
Eagle Lake1020241969
Dardanelle1020191986
Mccloud1020211978
Lassen Park719891981
Lumberyard720241982
Bartle720211972
Little Truckee720231997
Pollock Pines720241997
Strawberry720191999
Carrville619701970
French Gulch620102002

Dusky Flycatcher Population Trend in Other States

arizonacoloradoidahomontananebraskanevadanew-mexicooregonsouth-dakotautahwashingtonwyoming

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