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Species · Michigan · BBS 2025 Release · 1966–2024

Blackburnian Warbler Population Trend in Michigan

All statesForest birds

Blackburnian Warbler in Michigan has surged: up 485% on the route-weighted index since 1968.

+485%Since 1968
55Routes In State
58Years

Notable Blackburnian Warbler Trends in Michigan

long arc increasecomputed index

Blackburnian Warbler has surged in Michigan: up 485% on the route-weighted index since 1968.

Blackburnian Warbler Population Forecast in Michigan

If the recent trend holds, Blackburnian Warbler in Michigan is projected to rise about 64% by 2029 — from 1.1 in 2024 to a central estimate of 1.8 (95% range 1.1–2.5). A 5-year backtest shows a typical error of ±53.9%, with 60% of held-out values landing inside the 95% band.

+64%Change by 2029
1.8Projected 2029 index
1.1–2.595% range
±53.9%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
20251.71.02.4
20261.71.12.4
20271.81.12.4
20281.81.12.5
20291.81.12.5

Blackburnian Warbler Survey Routes in Michigan

Routes recording Blackburnian Warbler in Michigan.
Bergland1620221982
Imp Lake1620191992
Marenisco820191981
Raco720241972
Herman620131984
Gibbs City620241979
Crystal Fls520241979
Tahquamenon520241974
Gilchrist520211976
Scott'S Marsh520102006
Cluster Lakes520102006
Harrietta420241996
Maple Grove420241967
Ishpeming420231981
Shingleton420241967
Ensign420102006
Sidnaw320241993
Ontonagon220191969
Bootjack220211967
Ned Lake220241986
Brocky Lake220241981
Walloon Lake 2220242007
Barry S.G.A.220062006
Muskallonge220241966
Big Island Lake220102008

Blackburnian Warbler Population Trend in Other States

connecticutgeorgiaindianamainemarylandmassachusettsminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiopennsylvaniarhode-islandtennesseevermontvirginiawest-virginiawisconsin

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