BirdAnalyst
Species · BCR 4 · BBS 2025 Release · 1966–2024

American Wigeon In BCR 4

All regionsBCR 4Waterfowl

American Wigeon in BCR 4 has surged: up 224% on the route-weighted index since 1985.

+224%Since 1985
47Routes In Region
41Years

Notable Signals

long arc increasecomputed index

American Wigeon has surged in BCR 4: up 224% on the route-weighted index since 1985.

Forecast

If the recent trend holds, American Wigeon in BCR 4 is projected to rise about 47% by 2029 — from 2.2 in 2024 to a central estimate of 3.2 (95% range 0.00–7.0). A 5-year backtest shows a typical error of ±125.7%, with 100% of held-out values landing inside the 95% band.

+47%Change by 2029
3.2Projected 2029 index
0.00–7.095% range
±125.7%Backtest error
19822029
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
20253.20.007.0
20263.20.007.0
20273.20.007.0
20283.20.007.0
20293.20.007.0

Routes In BCR 4

Routes recording American Wigeon in BCR 4.
MonahanALASKA272017
Anchor RiverALASKA231995
KalifonskyALASKA172016
Hather CreekALASKA172024
Bear CreekALASKA151991
Kanuti CanynALASKA152024
Nicholai SlALASKA142024
Porcupine R.ALASKA112002
Kobuk River (Short)ALASKA101992
MaclarenALASKA82022
Mud RiverALASKA82024
Kanuti LakeALASKA82024
Pinoche Tral (Short)ALASKA61984
Chena RiverALASKA51988
Unalakleet RiverALASKA52024
ChistochinaALASKA42022
Tangle LakesALASKA41987
Anvik RiverALASKA42024
SlanaALASKA32024
Kenny LakeALASKA32019
PetersvilleALASKA32000
KuskulanaALASKA32023
Birch LakeALASKA22023
HomerALASKA21982
L SalchaALASKA21999

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