BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Blue-gray Gnatcatcher In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Blue-gray Gnatcatcher in Boreal Hardwood Transition has surged: up 102% on the route-weighted index since 1989.

+102%Since 1989
17Routes In Region
29Years

Notable Signals

No notable trend signals for Blue-gray Gnatcatcher in Boreal Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Blue-gray Gnatcatcher in Boreal Hardwood Transition is projected to fall about 25% by 2029 — from 0.07 in 2024 to a central estimate of 0.05 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±111%, with 100% of held-out values landing inside the 95% band.

-25%Change by 2029
0.05Projected 2029 index
0.00–0.1095% range
±111%Backtest error
19772029
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
20250.050.000.09
20260.050.000.09
20270.050.000.10
20280.050.000.10
20290.050.000.10

Routes In Boreal Hardwood Transition

Routes recording Blue-gray Gnatcatcher in Boreal Hardwood Transition.
Skegemog PtMICHIGAN22024
Bear LakeMICHIGAN11993
GilchristMICHIGAN11999
SkeelsMICHIGAN12004
CathroMICHIGAN11986
HarriettaMICHIGAN12024
Wigwam BayMINNESOTA12015
Mille LacsMINNESOTA12008
BrainerdMINNESOTA12002
Union TwpWISCONSIN12024
CouderayWISCONSIN12011
PhillipsWISCONSIN12002
AmbergWISCONSIN12022
WausaukeeWISCONSIN12009
Washington IWISCONSIN12021
BashawWISCONSIN12024
RhinelanderWISCONSIN12010

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