BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Cinnamon Teal In Prairie Potholes

All regionsPrairie PotholesWaterfowl

Cinnamon Teal in Prairie Potholes has declined: down 38% on the route-weighted index since 1973.

-38%Since 1973TrendPercent 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 →
15Routes 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 →
28YearsYears 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 Cinnamon Teal in Prairie Potholes. See the full index history below.

Cinnamon Teal In Prairie Potholes Population Forecast

If the recent trend holds, Cinnamon Teal in Prairie Potholes is projected to stay roughly flat through 2028, near 0.04 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±41.4%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.04Projected 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 →
0.00–0.1395% 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 →
±41.4%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, Cinnamon Teal in Prairie Potholes is projected to stay roughly flat through 2028, near 0.04 (95% range 0.00–0.13). A 5-year backtest shows a typical error of ±41.4%, with 100% of held-out values landing inside the 95% band.19702028
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 →
20240.040.000.13
20250.040.000.13
20260.040.000.13
20270.040.000.13
20280.040.000.13

Routes In Prairie Potholes

Routes recording Cinnamon Teal in Prairie Potholes.
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 →
Great FallsMONTANA32018
WhitlashMONTANA32017
ShelbyMONTANA32018
Hay LakeMONTANA22018
SunburstMONTANA22006
MaltaMONTANA21994
White LakeSOUTH-DAKOTA22000
VirgelleMONTANA12023
HarlemMONTANA11995
ChinookMONTANA12023
SacoMONTANA12018
GlentanaMONTANA12015
ReganNORTH-DAKOTA11978
CarpioNORTH-DAKOTA11970
BraddockNORTH-DAKOTA12005

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