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

Acadian Flycatcher Population Trend in South Carolina

All statesAerial insectivores

Acadian Flycatcher in South Carolina has held roughly steady: down 4% on the route-weighted index since 1968.

-4%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 →
51Routes 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 Acadian Flycatcher 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 Acadian Flycatcher in South Carolina. See the full index history below.

Acadian Flycatcher Population Forecast in South Carolina

If the recent trend holds, Acadian Flycatcher in South Carolina is projected to rise about 24% by 2029 — from 1.7 in 2024 to a central estimate of 2.1 (95% range 1.0–3.2). A 5-year backtest shows a typical error of ±33.2%, with 100% of held-out values landing inside the 95% band.

+24%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 →
2.1Projected 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 →
1.0–3.295% 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 →
±33.2%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, Acadian Flycatcher in South Carolina is projected to rise about 24% by 2029 — from 1.7 in 2024 to a central estimate of 2.1 (95% range 1.0–3.2). A 5-year backtest shows a typical error of ±33.2%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20252.11.03.2
20262.11.03.2
20272.11.03.2
20282.11.03.2
20292.11.03.2

Acadian Flycatcher Survey Routes in South Carolina

Routes recording Acadian Flycatcher 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 →
Walterboro1420171970
Whitmire720242010
Plum Branch620241977
Lowrys620212017
Jamestown420191967
Salem Xrd420191982
Carvers Bay420121998
Hardeeville320221973
Wagener320241966
Little Mtn319881966
Ward320182017
Ridgeway320212010
Salem320242010
Pinewood320172000
Dale320241998
Kiawah Island320192019
Cauthens Xrd320211983
Prosperity320241992
Owings 2320242005
Foreston220211966
Bishopville220181975
Boykin Ml Pd219681966
Greenwood220191998
Mount Pisgah220211998
Battlecreek220231999

Acadian Flycatcher Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandtennesseetexasvirginiawest-virginiawisconsin

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