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

Green Heron In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionWetland birds

Green Heron in Boreal Hardwood Transition has held roughly steady: down 4% on the route-weighted index since 1968.

-4%Since 1968
78Routes In Region
58Years

Notable Signals

No notable trend signals for Green Heron in Boreal Hardwood Transition. See the full index history below.

Forecast

If the recent trend holds, Green Heron in Boreal Hardwood Transition is projected to rise about 23% by 2029 — from 0.13 in 2024 to a central estimate of 0.16 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±89.1%, with 100% of held-out values landing inside the 95% band.

+23%Change by 2029
0.16Projected 2029 index
0.00–0.3695% range
±89.1%Backtest error
19662029
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
20250.170.000.36
20260.170.000.36
20270.170.000.36
20280.160.000.36
20290.160.000.36

Routes In Boreal Hardwood Transition

Routes recording Green Heron in Boreal Hardwood Transition.
MayfieldMICHIGAN32021
Rib LakeWISCONSIN32023
Lake CityMICHIGAN22010
CathroMICHIGAN22015
Wigwam BayMINNESOTA22023
DebsMINNESOTA22024
McgregorMINNESOTA22000
BrainerdMINNESOTA22011
Cass LakeMINNESOTA21983
ExelandWISCONSIN22023
GilmanWISCONSIN22022
PhillipsWISCONSIN22022
Popple RiverWISCONSIN21974
CrandonWISCONSIN22009
OntonagonMICHIGAN12017
MareniscoMICHIGAN12016
Ned LakeMICHIGAN12021
Crystal FlsMICHIGAN12024
Gibbs CityMICHIGAN12023
Maple GroveMICHIGAN12016
Brocky LakeMICHIGAN12017
WilsonMICHIGAN11984
CunardMICHIGAN12019
Bear LakeMICHIGAN12024
MuskallongeMICHIGAN11994

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