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

Warbling Vireo In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainForest birds

Warbling Vireo in Southeastern Coastal Plain has held roughly steady: up 0% on the route-weighted index since 1969.

+0%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 →
26Routes 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 →
54YearsYears 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 →

No notable trend signals for Warbling Vireo in Southeastern Coastal Plain. See the full index history below.

Forecast

If the recent trend holds, Warbling Vireo in Southeastern Coastal Plain is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±42.4%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.02Projected 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 →
0.00–0.0595% 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 →
±42.4%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, Warbling Vireo in Southeastern Coastal Plain is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±42.4%, 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 →
20250.020.000.05
20260.020.000.05
20270.020.000.05
20280.020.000.05
20290.020.000.05

Routes In Southeastern Coastal Plain

Routes recording Warbling Vireo 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 →
Lake MaryMISSISSIPPI51987
SurryVIRGINIA42021
HumboldtTENNESSEE32022
LovelacevileKENTUCKY22019
ShilohKENTUCKY22023
St FlorianALABAMA11993
EscatawpaALABAMA11988
PlettenbergLOUISIANA11984
BeverlyMISSISSIPPI11974
LucienMISSISSIPPI11992
FayetteMISSISSIPPI11973
ForestMISSISSIPPI11998
CorinthMISSISSIPPI12024
Water ValleyMISSISSIPPI12015
Fort AdamsMISSISSIPPI11979
Lake ComoMISSISSIPPI12010
RoseboroNORTH-CAROLINA12003
Lake SurfNORTH-CAROLINA11998
MoscowTENNESSEE12022
BrownsvilleTENNESSEE11993
WhitevilleTENNESSEE12023
Big SandyTENNESSEE12022
MansfieldTENNESSEE12024
SweetlipsTENNESSEE11997
SilertonTENNESSEE12002

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