BirdAnalyst
Species · Louisiana · BBS 2026 Release · 1966–2025

Chipping Sparrow Population Trend in Louisiana

All statesForest birds

Chipping Sparrow in Louisiana has edged up: up 10% on the route-weighted index since 1969.

+10%Since 1969TrendPercent 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 →
46Routes 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 →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Chipping Sparrow Trends in LouisianaNotable 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 Chipping Sparrow in Louisiana. See the full index history below.

Chipping Sparrow Population Forecast in Louisiana

If the recent trend holds, Chipping Sparrow in Louisiana is projected to fall about 48% by 2030 — from 0.92 in 2025 to a central estimate of 0.48 (95% range 0.00–1.8). A 5-year backtest shows a typical error of ±74.2%, with 100% of held-out values landing inside the 95% band.

-48%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 →
0.48Projected 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 →
0.00–1.895% 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 →
±74.2%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, Chipping Sparrow in Louisiana is projected to fall about 48% by 2030 — from 0.92 in 2025 to a central estimate of 0.48 (95% range 0.00–1.8). A 5-year backtest shows a typical error of ±74.2%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20260.550.001.9
20270.540.001.9
20280.520.001.9
20290.500.001.9
20300.480.001.8

Chipping Sparrow Survey Routes in Louisiana

Routes recording Chipping Sparrow in Louisiana.
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 →
Derry1419891970
Ivan920131998
Hargis 2820142013
Ivan 2820252014
Fort Polk719751967
Longstreet620251967
Trout520251992
Natchez520251992
Turkey Creek419981998
Linville320241998
Easton319881977
Chatham319731967
Evelyn320242009
Mount Union320251998
Womack320241999
Cheniere320251984
Lacombe219711968
Bickham220251972
Fishville220081970
Mer Rouge219861967
Greensburg220211990
Many219911989
Grayson220212011
Flat Creek220242024
Pine Prairie219961996

Chipping Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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