BirdAnalyst
Species · BCR 36 · BBS 2025 Release · 1966–2024

American Coot In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsWetland birds

American Coot in Tamaulipan Brushlands has declined: down 34% on the route-weighted index since 1970.

-34%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 →
11Routes 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 →
29YearsYears 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 American Coot in Tamaulipan Brushlands. See the full index history below.

American Coot In Tamaulipan Brushlands Population Forecast

If the recent trend holds, American Coot in Tamaulipan Brushlands is projected to rise about 186% by 2028 — from 0.18 in 2023 to a central estimate of 0.50 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±331.4%, with 100% of held-out values landing inside the 95% band.

+186%Change by 2028TrendPercent 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 →
0.50Projected 2028 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–2.295% 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 →
±331.4%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, American Coot in Tamaulipan Brushlands is projected to rise about 186% by 2028 — from 0.18 in 2023 to a central estimate of 0.50 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±331.4%, with 100% of held-out values landing inside the 95% band.19682028
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 →
20240.520.002.2
20250.510.002.2
20260.510.002.2
20270.510.002.2
20280.500.002.2

Routes In Tamaulipan Brushlands

Routes recording American Coot in Tamaulipan Brushlands.
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 →
ZapataTEXAS181972
ProgresoTEXAS102006
CatarinaTEXAS62004
RaymondvilleTEXAS62007
George WestTEXAS32010
HeidelbergTEXAS32023
LaredoTEXAS22021
KingsvilleTEXAS11993
Mirando CityTEXAS11993
EncinalTEXAS11999
HondoTEXAS12004

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