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Species · BCR 25 · BBS 2025 Release · 1966–2024

Blue Grosbeak In West Gulf Coastal Plain / Ouachitas

All regionsWest Gulf Coastal Plain / OuachitasGeneralists

Blue Grosbeak in West Gulf Coastal Plain / Ouachitas has increased: up 32% on the route-weighted index since 1969.

+32%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 →
108Routes 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 →
57YearsYears 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 Blue Grosbeak in West Gulf Coastal Plain / Ouachitas. See the full index history below.

Blue Grosbeak In West Gulf Coastal Plain / Ouachitas Population Forecast

If the recent trend holds, Blue Grosbeak in West Gulf Coastal Plain / Ouachitas is projected to rise about 11% by 2029 — from 3.8 in 2024 to a central estimate of 4.2 (95% range 2.4–6.0). A 5-year backtest shows a typical error of ±10.6%, with 100% of held-out values landing inside the 95% band.

+11%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 →
4.2Projected 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 →
2.4–6.095% 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 →
±10.6%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, Blue Grosbeak in West Gulf Coastal Plain / Ouachitas is projected to rise about 11% by 2029 — from 3.8 in 2024 to a central estimate of 4.2 (95% range 2.4–6.0). A 5-year backtest shows a typical error of ±10.6%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20254.22.46.0
20264.22.46.0
20274.22.46.0
20284.22.46.0
20294.22.46.0

Routes In West Gulf Coastal Plain / Ouachitas

Routes recording Blue Grosbeak in West Gulf Coastal Plain / Ouachitas.
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 →
PushmatahaOKLAHOMA432023
PocolaOKLAHOMA142009
FillmoreLOUISIANA131989
MatoyOKLAHOMA132000
StarkARKANSAS122024
ManyLOUISIANA121992
Flat CreekLOUISIANA122024
IvanLOUISIANA122013
GoodwaterOKLAHOMA122021
SmyrnaTEXAS112010
AshdownARKANSAS102023
SpringhillARKANSAS102022
Ivan 2LOUISIANA102016
GoodwillLOUISIANA102024
HavanaARKANSAS92021
NanceARKANSAS92024
EastonLOUISIANA91990
ClayLOUISIANA92024
TroutLOUISIANA92024
EvelynLOUISIANA92024
McalesterOKLAHOMA91991
Liberty HillTEXAS92023
LongstreetLOUISIANA82024
LinvilleLOUISIANA82024
HargisLOUISIANA82010

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