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

Cliff Swallow Population Trend in Wyoming

All statesAerial insectivores

Cliff Swallow in Wyoming has declined: down 27% on the route-weighted index since 1970.

-27%Since 1970
124Routes In State
56Years

Notable Cliff Swallow Trends in Wyoming

No notable trend signals for Cliff Swallow in Wyoming. See the full index history below.

Cliff Swallow Population Forecast in Wyoming

If the recent trend holds, Cliff Swallow in Wyoming is projected to stay roughly flat through 2029, near 20 (95% range 5.0–36). A 5-year backtest shows a typical error of ±23.2%, with 100% of held-out values landing inside the 95% band.

+10%Change by 2029
20Projected 2029 index
5.0–3695% range
±23.2%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
2025215.336
2026215.236
2027205.136
2028205.036
2029205.036

Cliff Swallow Survey Routes in Wyoming

Routes recording Cliff Swallow in Wyoming.
Bill18820181974
Yoder17320241970
Natrona16019921968
Dwyer15520191992
Arvada15220241982
Sussex11820241991
Meeteetse11720241991
Pine Tree10919951980
Seely 210620242001
Lingle10420241980
Harmony10420231980
Boulder10020241982
Colter Bay9519991968
Moran8020162002
Hayden Val7619861985
Piney7419901980
Seely5820001991
Mtn View5320241981
Cody5120241983
Shirley5020241980
Gebo4720241980
Kaycee4620242014
Schoonover4520241982
Riverview4120221984
Basin4020241970

Cliff Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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