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

Blue-gray Gnatcatcher In Northern Rockies

All regionsNorthern RockiesForest birds

Blue-gray Gnatcatcher in Northern Rockies has surged: up 129% on the route-weighted index since 1980.

+129%Since 1980
22Routes In Region
43Years

Notable Signals

long arc increasecomputed index

Blue-gray Gnatcatcher has surged in Northern Rockies: up 129% on the route-weighted index since 1980.

Forecast

If the recent trend holds, Blue-gray Gnatcatcher in Northern Rockies is projected to rise about 25% by 2029 — from 0.09 in 2024 to a central estimate of 0.11 (95% range 0.02–0.19). A 5-year backtest shows a typical error of ±103.5%, with 80% of held-out values landing inside the 95% band.

+25%Change by 2029
0.11Projected 2029 index
0.02–0.1995% range
±103.5%Backtest error
19742029
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
20250.100.010.19
20260.100.020.19
20270.100.020.19
20280.100.020.19
20290.110.020.19

Routes In Northern Rockies

Routes recording Blue-gray Gnatcatcher in Northern Rockies.
Crawford MtsUTAH52023
MaybellCOLORADO42024
SaveryWYOMING41993
Great DivideCOLORADO32019
LamontWYOMING31987
Browns ParkCOLORADO22024
MadrasOREGON22024
NowoodWYOMING22013
TensleepWYOMING22013
LayCOLORADO12024
MonumentOREGON12023
Saleratus CrUTAH11995
E. Bear LakeUTAH12019
DuboisWYOMING12013
RiversideWYOMING12007
MooseWYOMING12024
Mtn ViewWYOMING12016
Rock SpringsWYOMING12016
BaggsWYOMING12024
HarmonyWYOMING12014
Flamin GorgeWYOMING12024
Savery 2WYOMING12016

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