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Species · Michigan · BBS 2025 Release · 1966–2024

Black-throated Green Warbler Population Trend in Michigan

All statesForest birds

Black-throated Green Warbler in Michigan has surged: up 470% on the route-weighted index since 1968.

+470%Since 1968
70Routes In State
58Years

Notable Black-throated Green Warbler Trends in Michigan

long arc increasecomputed index

Black-throated Green Warbler has surged in Michigan: up 470% on the route-weighted index since 1968.

Black-throated Green Warbler Population Forecast in Michigan

If the recent trend holds, Black-throated Green Warbler in Michigan is projected to rise about 89% by 2029 — from 2.5 in 2024 to a central estimate of 4.8 (95% range 3.0–6.6). A 5-year backtest shows a typical error of ±65.7%, with 20% of held-out values landing inside the 95% band.

+89%Change by 2029
4.8Projected 2029 index
3.0–6.695% range
±65.7%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
20254.52.76.3
20264.62.86.4
20274.62.96.4
20284.72.96.5
20294.83.06.6

Black-throated Green Warbler Survey Routes in Michigan

Routes recording Black-throated Green Warbler in Michigan.
Imp Lake2420191992
Ensign2220102006
Scott'S Marsh1620102006
Big Island Lake1620102008
Hiawatha Nf1520241992
Sidnaw1520241993
Marenisco1420191981
Gooseneck1420102008
Gilchrist1220211974
Cluster Lakes1220102006
Isabella 21220242013
Ontonagon1020191970
Muskallonge1020241968
Betchler Lks1020241992
Herman920221983
Gibbs City820241979
Shingleton820241967
Raco820241971
Tahquamenon720241974
Bergland520221982
Ned Lake520241986
Isabella520121966
Pickford520241973
Brush Creek520161974
Maple Grove420241969

Black-throated Green Warbler Population Trend in Other States

alabamaarkansasconnecticutgeorgiaindianakentuckymainemarylandmassachusettsminnesotamissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseevermontvirginiawest-virginiawisconsin

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