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Species · Indiana · BBS 2026 Release · 1966–2025

Ruby-throated Hummingbird Population Trend in Indiana

All statesForest birds

Ruby-throated Hummingbird in Indiana has declined: down 25% on the route-weighted index since 1968.

-25%Since 1968TrendPercent 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 →
64Routes 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 →
59YearsYears 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-throated Hummingbird Trends in IndianaNotable 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-throated Hummingbird in Indiana. See the full index history below.

Ruby-throated Hummingbird Population Forecast in Indiana

If the recent trend holds, Ruby-throated Hummingbird in Indiana is projected to rise about 106% by 2030 — from 0.41 in 2025 to a central estimate of 0.85 (95% range 0.40–1.3). A 5-year backtest shows a typical error of ±122.2%, with 40% of held-out values landing inside the 95% band.

+106%Change by 2030TrendPercent 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 →
0.85Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.40–1.395% 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 →
±122.2%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-throated Hummingbird in Indiana is projected to rise about 106% by 2030 — from 0.41 in 2025 to a central estimate of 0.85 (95% range 0.40–1.3). A 5-year backtest shows a typical error of ±122.2%, with 40% of held-out values landing inside the 95% band.19662030
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 →
20260.830.371.3
20270.840.381.3
20280.840.391.3
20290.850.391.3
20300.850.401.3

Ruby-throated Hummingbird Survey Routes in Indiana

Routes recording Ruby-throated Hummingbird in Indiana.
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 →
Maplewood520212000
Knox320191984
Spencer320191971
Milroy320101967
Clear Spring320251981
New Phila320251982
South Bend219841984
Columbia Cty220222004
Packertown220041969
Galveston220221981
Brazil220241966
Jamestown220231991
Millersburg220191981
Indian Spgs220241982
Corydon220251968
Vevay220231966
Scottsburg220171984
Wallace220242000
Witts Station220252001
Newberry220231999
Cyprss220192001
Gary119921992
Hebron120111966
Kewanna120151984
Middlebury120231991

Ruby-throated Hummingbird Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.