BirdAnalyst
Species · Michigan · BBS 2025 Release · 1966–2024

American Woodcock Population Trend in Michigan

All statesShorebirds

American Woodcock in Michigan has collapsed: down 76% on the route-weighted index since 1970.

-76%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
60Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
45YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable American Woodcock Trends in MichiganNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

American Woodcock has collapsed in Michigan: down 76% on the route-weighted index since 1970.

American Woodcock Population Forecast in Michigan

If the recent trend holds, American Woodcock in Michigan is projected to stay roughly flat through 2027, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±22.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2027TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.01Projected 2027 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1095% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±22.1%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, American Woodcock in Michigan is projected to stay roughly flat through 2027, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±22.1%, with 100% of held-out values landing inside the 95% band.19662027
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20230.020.000.11
20240.020.000.11
20250.020.000.10
20260.010.000.10
20270.010.000.10

American Woodcock Survey Routes in Michigan

Routes recording American Woodcock in Michigan.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Ned Lake319861986
Gilchrist220161979
Traverse Cty219741974
Brush Creek219931993
Skeels219861980
Fowlerville220021977
Deckerville220022002
Tyre219841984
Harrietta120111990
Bergland119901990
Marenisco119941986
Bootjack119941993
Herman119841984
Crystal Fls120222011
Gibbs City119821982
Maple Grove119971974
Ishpeming119811981
Brocky Lake119801980
Wilson119751975
Cunard119971994
Shingleton120022002
Creighton119891989
Isabella119661966
Betchler Lks120152013
Seney Nwr120172017

American Woodcock Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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