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Species · BCR 14 · BBS 2025 Release · 1966–2024

Spotted Sandpiper In Atlantic Northern Forest

All regionsAtlantic Northern ForestShorebirds

Spotted Sandpiper in Atlantic Northern Forest has collapsed: down 85% on the route-weighted index since 1968.

-85%Since 1968TrendPercent 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 →
93Routes 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 →
55YearsYears 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 →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Spotted Sandpiper has collapsed in Atlantic Northern Forest: down 85% on the route-weighted index since 1968.

Spotted Sandpiper In Atlantic Northern Forest Population Forecast

If the recent trend holds, Spotted Sandpiper in Atlantic Northern Forest is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±30.3%, 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 →
0.00Projected 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 →
0.00–0.1095% 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 →
±30.3%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 Atlantic Northern Forest is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±30.3%, with 100% of held-out values landing inside the 95% band.19662028
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 →
20240.020.000.12
20250.010.000.12
20260.010.000.11
20270.010.000.11
20280.000.000.10

Routes In Atlantic Northern Forest

Routes recording Spotted Sandpiper in Atlantic Northern Forest.
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 →
BaxterMAINE31984
WashburnMAINE32005
GreenwoodMAINE22021
HarmonyMAINE21989
CastineMAINE21983
AuroraMAINE22001
Ft FairfieldMAINE22005
FitzwilliamNEW-HAMPSHIRE21989
HopkintonNEW-HAMPSHIRE21983
Mt ChocoruaNEW-HAMPSHIRE22019
WalpoleNEW-HAMPSHIRE22004
LempsterNEW-HAMPSHIRE21992
ClarksvilleNEW-HAMPSHIRE22005
GaysvilleVERMONT22013
GreensboroVERMONT22022
New HartfordCONNECTICUT11987
NewcastleMAINE11982
Wilson MillsMAINE11996
TurnerMAINE11972
ReedsMAINE11994
South ArmMAINE11990
Otisfield GrMAINE11993
HartfordMAINE12019
Bowdoin CtrMAINE11999
ManchesterMAINE11982

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