BirdAnalyst
Species · BCR 21 · BBS 2025 Release · 1966–2024

Warbling Vireo In Oaks and Prairies

All regionsOaks and PrairiesForest birds

Warbling Vireo in Oaks and Prairies has declined: down 32% on the route-weighted index since 1970.

-32%Since 1970TrendPercent 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 →
16Routes 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 →
37YearsYears 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 Oaks and Prairies. See the full index history below.

Warbling Vireo In Oaks and Prairies Population Forecast

If the recent trend holds, Warbling Vireo in Oaks and Prairies is projected to stay roughly flat through 2024, near 0.05 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±190.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2024TrendPercent 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 →
0.05Projected 2024 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1195% 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 →
±190.4%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 Oaks and Prairies is projected to stay roughly flat through 2024, near 0.05 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±190.4%, with 100% of held-out values landing inside the 95% band.19672024
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 →
20200.050.000.11
20210.050.000.11
20220.050.000.11
20230.050.000.11
20240.050.000.11

Routes In Oaks and Prairies

Routes recording Warbling Vireo in Oaks and Prairies.
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 →
LocoOKLAHOMA11974
ArdmoreOKLAHOMA11970
HoldenvilleOKLAHOMA12014
BeggsOKLAHOMA11967
ChoctawOKLAHOMA12007
NobleOKLAHOMA12019
BartlesvilleOKLAHOMA12008
TatumsOKLAHOMA12010
HeyburnOKLAHOMA12015
DuncanOKLAHOMA12008
SkiatookOKLAHOMA11993
Massey LakeTEXAS11984
OsageTEXAS12009
LydiaTEXAS11971
Miller GroveTEXAS11969
SadlerTEXAS12014

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