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Species · Michigan · BBS 2025 Release · 1966–2024

Magnolia Warbler Population Trend in Michigan

All statesForest birds

Magnolia Warbler in Michigan has surged: up 12× on the route-weighted index since 1974.

12×Since 1974
52Routes In State
51Years

Notable Magnolia Warbler Trends in Michigan

long arc increasecomputed index

Magnolia Warbler has surged in Michigan: up 12× on the route-weighted index since 1974.

Magnolia Warbler Population Forecast in Michigan

If the recent trend holds, Magnolia Warbler in Michigan is projected to rise about 101% by 2029 — from 0.49 in 2024 to a central estimate of 0.98 (95% range 0.49–1.5). A 5-year backtest shows a typical error of ±90.6%, with 60% of held-out values landing inside the 95% band.

+101%Change by 2029
0.98Projected 2029 index
0.49–1.595% range
±90.6%Backtest error
19712029
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
20250.940.441.4
20260.950.451.4
20270.960.461.5
20280.970.471.5
20290.980.491.5

Magnolia Warbler Survey Routes in Michigan

Routes recording Magnolia Warbler in Michigan.
Ishpeming820231980
Herman720221983
Gibbs City620241985
Ensign520102006
Ontonagon420191971
Betchler Lks420241992
Bootjack320231986
Ned Lake320241986
Pine River320181992
Marenisco220191981
Crystal Fls220242010
Big Blue Lk219931984
Scott'S Marsh220102006
Gilchrist220211986
Pleasant Val219961996
Pickford220241990
Frederic220011988
Sidnaw220241996
Cluster Lakes220102006
Harrietta120172017
Bergland120221979
Maple Grove120241981
Brocky Lake120241980
Wilson120091993
Cunard120041985

Magnolia Warbler Population Trend in Other States

connecticutmainemarylandmassachusettsminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiopennsylvaniavermontvirginiawest-virginiawisconsin

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