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

Hudsonian Godwit In BCR 2

All regionsBCR 2Shorebirds

Hudsonian Godwit in BCR 2 has surged: up 81% on the route-weighted index since 1996.

+81%Since 1996TrendPercent 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 →
22YearsYears 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 increasecomputed 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 →

Hudsonian Godwit has surged in BCR 2: up 81% on the route-weighted index since 1996.

Hudsonian Godwit In BCR 2 Population Forecast

If the recent trend holds, Hudsonian Godwit in BCR 2 is projected to rise about 65% by 2023 — from 0.20 in 2018 to a central estimate of 0.33 (95% range 0.01–0.65). A 5-year backtest shows a typical error of ±50.4%, with 80% of held-out values landing inside the 95% band.

+65%Change by 2023TrendPercent 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 →
0.33Projected 2023 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.01–0.6595% 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 →
±50.4%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, Hudsonian Godwit in BCR 2 is projected to rise about 65% by 2023 — from 0.20 in 2018 to a central estimate of 0.33 (95% range 0.01–0.65). A 5-year backtest shows a typical error of ±50.4%, with 80% of held-out values landing inside the 95% band.19942023
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 →
20190.310.000.63
20200.310.000.63
20210.320.000.64
20220.320.010.64
20230.330.010.65

Routes In BCR 2

Routes recording Hudsonian Godwit 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 RiverALASKA32001
King SalmonALASKA22018
TupuknukALASKA11995

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