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Species · Montana · BBS 2025 Release · 1966–2024

Least Flycatcher Population Trend in Montana

All statesAerial insectivores

Least Flycatcher in Montana has surged: up 821% on the route-weighted index since 1971.

+821%Since 1971
79Routes In State
54Years

Notable Least Flycatcher Trends in Montana

long arc increasecomputed index

Least Flycatcher has surged in Montana: up 821% on the route-weighted index since 1971.

Least Flycatcher Population Forecast in Montana

If the recent trend holds, Least Flycatcher in Montana is projected to rise about 33% by 2029 — from 0.93 in 2024 to a central estimate of 1.2 (95% range 0.63–1.9). A 5-year backtest shows a typical error of ±60.4%, with 80% of held-out values landing inside the 95% band.

+33%Change by 2029
1.2Projected 2029 index
0.63–1.995% range
±60.4%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
20251.20.581.8
20261.20.591.8
20271.20.601.8
20281.20.611.8
20291.20.631.9

Least Flycatcher Survey Routes in Montana

Routes recording Least Flycatcher in Montana.
Libby Dam3920151986
Reed Point1820241977
Highwood820241972
Cleveland520241985
Forsyth520231991
Redstone420241983
Brandenberg420191969
Fish Creek420001996
Painted Rock420101994
Chinook420242015
Clyde Park420242018
Glasgow320221988
Locate320242002
Pablo Res.320152008
St. Mary 2320242011
Wolf Creek320222015
Church Hill320242018
Greenough320022000
Kalispell220181969
Harlem220131998
St Regis220091996
Arlee220222010
Augusta220241977
Brusett220241982
Jordan220172010

Least Flycatcher Population Trend in Other States

alaskaarkansascaliforniacoloradoconnecticutgeorgiaidahoillinoisindianaiowakentuckymainemarylandmassachusettsmichiganminnesotamissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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