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Species · Michigan · BBS 2025 Release · 1966–2024

Ruby-crowned Kinglet Population Trend in Michigan

All statesForest birds

Ruby-crowned Kinglet in Michigan has held roughly steady: up 1% on the route-weighted index since 1971.

+1%Since 1971TrendPercent 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 →
35Routes 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 →
55YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Ruby-crowned Kinglet 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 →

No notable trend signals for Ruby-crowned Kinglet in Michigan. See the full index history below.

Ruby-crowned Kinglet Population Forecast in Michigan

If the recent trend holds, Ruby-crowned Kinglet in Michigan is projected to rise about 17% by 2029 — from 0.15 in 2024 to a central estimate of 0.17 (95% range 0.00–0.47). A 5-year backtest shows a typical error of ±55.6%, with 60% of held-out values landing inside the 95% band.

+17%Change by 2029TrendPercent 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 →
0.17Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.4795% 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 →
±55.6%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, Ruby-crowned Kinglet in Michigan is projected to rise about 17% by 2029 — from 0.15 in 2024 to a central estimate of 0.17 (95% range 0.00–0.47). A 5-year backtest shows a typical error of ±55.6%, with 60% of held-out values landing inside the 95% band.19682029
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 →
20250.180.000.48
20260.180.000.48
20270.180.000.47
20280.180.000.47
20290.170.000.47

Ruby-crowned Kinglet Survey Routes in Michigan

Routes recording Ruby-crowned Kinglet 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 →
Seney Nwr720191993
Cluster Lakes420092006
Ontonagon320192014
Marenisco220191986
Herman220221983
Gibbs City220241982
Creighton220151978
Imp Lake220191992
Bergland120191987
Bootjack119951995
Ned Lake120241994
Crystal Fls120241984
Maple Grove120191968
Ishpeming120231980
Brocky Lake120241980
Wilson120041983
Cunard120211974
Shingleton120221977
Isabella119961974
Betchler Lks120211992
Sidnaw120131995
Scott'S Marsh120092008
Ensign120092009
Muskallonge120231968
Tahquamenon120241974

Ruby-crowned Kinglet Population Trend in Other States

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