BirdAnalyst
Species · BCR 2 · BBS 2025 Release · 1966–2024

Semipalmated Sandpiper In BCR 2

All regionsBCR 2Shorebirds

Semipalmated Sandpiper in BCR 2 has surged: up 183% on the route-weighted index since 1994.

+183%Since 1994
7Routes In Region
32Years

Notable Signals

long arc increasecomputed index

Semipalmated Sandpiper has surged in BCR 2: up 183% on the route-weighted index since 1994.

Forecast

If the recent trend holds, Semipalmated Sandpiper in BCR 2 is projected to fall about 26% by 2029 — from 8.7 in 2024 to a central estimate of 6.4 (95% range 1.6–11). A 5-year backtest shows a typical error of ±199.7%, with 80% of held-out values landing inside the 95% band.

-26%Change by 2029
6.4Projected 2029 index
1.6–1195% range
±199.7%Backtest error
19862029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20255.81.011
20266.01.111
20276.11.311
20286.21.411
20296.41.611

Routes In BCR 2

Routes recording Semipalmated Sandpiper in BCR 2.
Cape NomeALASKA262024
Salmon LakeALASKA182024
Kotzebue (Short)ALASKA161986
CouncilALASKA152024
TellerALASKA112024
KotzebueALASKA82024
NomeALASKA22012

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