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

Lesser Yellowlegs In BCR 2

All regionsBCR 2Shorebirds

Lesser Yellowlegs in BCR 2 has collapsed: down 80% on the route-weighted index since 1995.

-80%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 →
8Routes 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 →
14YearsYears 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 →

Lesser Yellowlegs has collapsed in BCR 2: down 80% on the route-weighted index since 1995.

Routes In BCR 2

Routes recording Lesser Yellowlegs in BCR 2.
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 →
Gweek RiverALASKA72002
TupuknukALASKA71995
Selawik (Short)ALASKA51987
DillinghamALASKA11996
King SalmonALASKA12019
Salmon LakeALASKA12018
Kugarak (Short)ALASKA11987
Cold Bay (Short)ALASKA11987

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