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Species · BCR 3 · BBS 2025 Release · 1966–2024

Lesser Yellowlegs In BCR 3

All regionsBCR 3Shorebirds

Lesser Yellowlegs in BCR 3 has declined: down 39% on the route-weighted index since 1995.

-39%Since 1995TrendPercent 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 →
3Routes 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 →
25YearsYears 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 Lesser Yellowlegs in BCR 3. See the full index history below.

Lesser Yellowlegs In BCR 3 Population Forecast

If the recent trend holds, Lesser Yellowlegs in BCR 3 is projected to rise about 110% by 2028 — from 0.40 in 2023 to a central estimate of 0.84 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±127.9%, with 100% of held-out values landing inside the 95% band.

+110%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 →
0.84Projected 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 →
0.00–2.695% 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 →
±127.9%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, Lesser Yellowlegs in BCR 3 is projected to rise about 110% by 2028 — from 0.40 in 2023 to a central estimate of 0.84 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±127.9%, with 100% of held-out values landing inside the 95% band.19932028
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 →
20240.900.002.6
20250.880.002.6
20260.870.002.6
20270.850.002.6
20280.840.002.6

Routes In BCR 3

Routes recording Lesser Yellowlegs in BCR 3.
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 →
Galbraith L.ALASKA32022
Dietrich CmpALASKA12023
Happy ValleyALASKA12023

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