BirdAnalyst
Species · South Carolina · BBS 2025 Release · 1966–2024

Cedar Waxwing Population Trend in South Carolina

All statesGeneralists

Cedar Waxwing in South Carolina has increased: up 39% on the route-weighted index since 1990.

+39%Since 1990TrendPercent 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 →
12Routes 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 →
26YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Cedar Waxwing Trends in South CarolinaNotable 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 Cedar Waxwing in South Carolina. See the full index history below.

Cedar Waxwing Population Forecast in South Carolina

If the recent trend holds, Cedar Waxwing in South Carolina is projected to stay roughly flat through 2029, near 0.30 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±83.1%, with 100% of held-out values landing inside the 95% band.

+5%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 →
0.30Projected 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 →
0.00–1.095% 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 →
±83.1%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, Cedar Waxwing in South Carolina is projected to stay roughly flat through 2029, near 0.30 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±83.1%, with 100% of held-out values landing inside the 95% band.19732029
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 →
20250.300.001.0
20260.300.001.0
20270.300.001.0
20280.300.001.0
20290.300.001.0

Cedar Waxwing Survey Routes in South Carolina

Routes recording Cedar Waxwing in South Carolina.
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 →
Chesnee4920022002
Battlecreek620242002
Bishopville520121990
Salem420232010
Barton Creek220141993
Blacksburg219991999
Landrum219861986
Bennettsville220102008
Anderson220101991
Campobello220212010
Little Mtn119731973
Prosperity120232023

Cedar Waxwing Population Trend in Other States

alabamaalaskaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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