BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Field Sparrow In Gulf Coastal Prairie

All regionsGulf Coastal PrairieGeneralists

Field Sparrow in Gulf Coastal Prairie has declined: down 47% on the route-weighted index since 1981.

-47%Since 1981TrendPercent 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 →
6Routes 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 →
17YearsYears 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 Field Sparrow in Gulf Coastal Prairie. See the full index history below.

Routes In Gulf Coastal Prairie

Routes recording Field Sparrow in Gulf Coastal Prairie.
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 →
San PedroTEXAS42014
MamouLOUISIANA31971
Goliad PrairieTEXAS22010
Gran ChenierLOUISIANA11981
VanderbiltTEXAS11971
WinnieTEXAS11996

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