BirdAnalyst
Species · Connecticut · BBS 2025 Release · 1966–2024

Spotted Sandpiper Population Trend in Connecticut

All statesShorebirds

Spotted Sandpiper in Connecticut has edged up: up 11% on the route-weighted index since 1974.

+11%Since 1974TrendPercent 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 →
14Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
20YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Spotted Sandpiper Trends in ConnecticutNotable 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 Spotted Sandpiper in Connecticut. See the full index history below.

Spotted Sandpiper Population Forecast in Connecticut

If the recent trend holds, Spotted Sandpiper in Connecticut is projected to rise about 77% by 2028 — from 0.09 in 2023 to a central estimate of 0.16 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±31.3%, with 100% of held-out values landing inside the 95% band.

+77%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 →
0.16Projected 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 →
0.00–0.3495% 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 →
±31.3%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, Spotted Sandpiper in Connecticut is projected to rise about 77% by 2028 — from 0.09 in 2023 to a central estimate of 0.16 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±31.3%, 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 →
20240.160.000.34
20250.160.000.34
20260.160.000.34
20270.160.000.34
20280.160.000.34

Spotted Sandpiper Survey Routes in Connecticut

Routes recording Spotted Sandpiper in Connecticut.
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 →
No Woodbury519861978
Uncasville220211999
Sherman219991995
Mystic119881988
E Hartland119861968
Buckingham119831983
Willimantic119961996
Greenwich119691969
Danbury120232023
Warren119771977
Long Hill119841974
Mid Haddam119961985
Southington119831975
New Hartford119871987

Spotted Sandpiper Population Trend in Other States

alabamaalaskaarizonacaliforniacoloradodelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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