BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Least Flycatcher In Northern Rockies

All regionsNorthern RockiesAerial insectivores

Least Flycatcher in Northern Rockies has surged: up 590% on the route-weighted index since 1972.

+590%Since 1972
78Routes In Region
53Years

Notable Signals

long arc increasecomputed index

Least Flycatcher has surged in Northern Rockies: up 590% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Least Flycatcher in Northern Rockies is projected to rise about 20% by 2029 — from 0.29 in 2024 to a central estimate of 0.35 (95% range 0.15–0.54). A 5-year backtest shows a typical error of ±10.2%, with 100% of held-out values landing inside the 95% band.

+20%Change by 2029
0.35Projected 2029 index
0.15–0.5495% range
±10.2%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
20250.330.130.53
20260.330.140.53
20270.340.140.53
20280.340.150.54
20290.350.150.54

Routes In Northern Rockies

Routes recording Least Flycatcher in Northern Rockies.
Libby DamMONTANA392015
Yellow PineIDAHO71993
NaplesIDAHO62024
Fish CreekMONTANA42000
Painted RockMONTANA42010
Clyde ParkMONTANA42024
Pablo Res.MONTANA32015
St. Mary 2MONTANA32024
Wolf CreekMONTANA32022
Church HillMONTANA32024
GreenoughMONTANA32002
Hunter PeakWYOMING32010
MeeteetseWYOMING32024
HarmonyWYOMING32022
LayCOLORADO22024
Lolo PassIDAHO22019
BurgdorfIDAHO21992
FeathervilleIDAHO21996
KalispellMONTANA22018
St RegisMONTANA22009
ArleeMONTANA22022
AugustaMONTANA22024
Red RockMONTANA22008
NinemileMONTANA22008
Wise RiverMONTANA22008

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