BirdAnalyst
Species · Alaska · BBS 2025 Release · 1966–2024

Bank Swallow Population Trend in Alaska

All statesAerial insectivores

Bank Swallow in Alaska has collapsed: down 82% on the route-weighted index since 1976.

-82%Since 1976
91Routes In State
47Years

Notable Bank Swallow Trends in Alaska

long arc declinecomputed index

Bank Swallow has collapsed in Alaska: down 82% on the route-weighted index since 1976.

Bank Swallow Population Forecast in Alaska

If the recent trend holds, Bank Swallow in Alaska is projected to fall about 100% by 2029 — from 2.8 in 2024 to a central estimate of 0.00 (95% range 0.00–12). A 5-year backtest shows a typical error of ±109.5%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1295% range
±109.5%Backtest error
19682029
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
20250.170.0012
20260.000.0012
20270.000.0012
20280.000.0012
20290.000.0012

Bank Swallow Survey Routes in Alaska

Routes recording Bank Swallow in Alaska.
Kanektok Riv22320051995
Tupuknuk16019951995
Bear Creek9619911986
Selawik (Short)9319871986
Wasilla6519831983
Goodnews Bay5820051999
King Salmon5720241993
Kobuk River (Short)5619921991
Dillingham (Short)5619841984
Koyukuk Riv.4220011993
Kenai Lake (Short)3619921992
Gweek River3220021994
Circle3120241987
Mcgrath2720191997
Tangle Lakes2319871987
Mud River2020241993
Kodiak1919841983
Hather Creek1720221993
Paxson Lake1619921992
Copper River1420111993
Togiak River1420051999
Chiniak1220241985
Cantwell1120031982
Matanuska1119831983
Lake Louise1120081993

Bank Swallow Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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