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

Ruby-throated Hummingbird In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionGeneralists

Ruby-throated Hummingbird in Boreal Hardwood Transition has surged: up 306% on the route-weighted index since 1968.

+306%Since 1968
118Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Ruby-throated Hummingbird has surged in Boreal Hardwood Transition: up 306% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Ruby-throated Hummingbird in Boreal Hardwood Transition is projected to rise about 33% by 2029 — from 0.83 in 2024 to a central estimate of 1.1 (95% range 0.85–1.3). A 5-year backtest shows a typical error of ±18%, with 80% of held-out values landing inside the 95% band.

+33%Change by 2029
1.1Projected 2029 index
0.85–1.395% range
±18%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
20251.00.791.3
20261.10.811.3
20271.10.821.3
20281.10.841.3
20291.10.851.3

Routes In Boreal Hardwood Transition

Routes recording Ruby-throated Hummingbird in Boreal Hardwood Transition.
Rib LakeWISCONSIN82024
Union TwpWISCONSIN72024
PhillipsWISCONSIN62024
OntonagonMICHIGAN42019
HermanMICHIGAN42013
Pine RiverMINNESOTA42003
Popple RiverWISCONSIN42024
HollisterWISCONSIN42019
Ned LakeMICHIGAN32024
IshpemingMICHIGAN32021
RacoMICHIGAN32024
Beaver LakeMICHIGAN32011
Big Island LakeMICHIGAN32009
JordanMINNESOTA32022
Iron RiverWISCONSIN32024
CouderayWISCONSIN32019
ExelandWISCONSIN32022
Washington IWISCONSIN32024
Weirgor SpringsWISCONSIN32019
BootjackMICHIGAN22023
Crystal FlsMICHIGAN22024
Gibbs CityMICHIGAN22024
Imp LakeMICHIGAN22019
Hart LakeMINNESOTA22015
FloodwoodMINNESOTA22024

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