BirdAnalyst
Species · BCR 27 · BBS 2025 Release · 1966–2024

Bewick's Wren In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainForest birds

Bewick's Wren in Southeastern Coastal Plain has collapsed: down 96% on the route-weighted index since 1968.

-96%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 →
24Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
23YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Bewick's Wren has collapsed in Southeastern Coastal Plain: down 96% on the route-weighted index since 1968.

Bewick's Wren In Southeastern Coastal Plain Population Forecast

If the recent trend holds, Bewick's Wren in Southeastern Coastal Plain is projected to stay roughly flat through 2001, near 0.00 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±1495.9%, with 60% of held-out values landing inside the 95% band.

n/aChange by 2001TrendPercent 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 →
0.00Projected 2001 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1295% 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 →
±1495.9%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, Bewick's Wren in Southeastern Coastal Plain is projected to stay roughly flat through 2001, near 0.00 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±1495.9%, with 60% of held-out values landing inside the 95% band.19662001
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 →
19970.000.000.12
19980.000.000.12
19990.000.000.12
20000.000.000.12
20010.000.000.12

Routes In Southeastern Coastal Plain

Routes recording Bewick's Wren in Southeastern Coastal Plain.
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 →
RiderwoodALABAMA31976
SilertonTENNESSEE31980
Olive BranchMISSISSIPPI21969
WalthallMISSISSIPPI21979
Duck HillMISSISSIPPI21974
TibbsTENNESSEE21972
SweetlipsTENNESSEE21988
HumboldtTENNESSEE21970
St FlorianALABAMA11993
LibertyALABAMA11987
GrangeburgALABAMA11996
EufaulaALABAMA11996
LovelacevileKENTUCKY11967
CockrumMISSISSIPPI11984
CorinthMISSISSIPPI11979
TupeloMISSISSIPPI11974
MaconMISSISSIPPI11972
AberdeenMISSISSIPPI11970
EmbryMISSISSIPPI11990
MoscowTENNESSEE11968
BrownsvilleTENNESSEE11976
WhitevilleTENNESSEE11975
Big SandyTENNESSEE11977
MansfieldTENNESSEE11987

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