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Species · Wyoming · BBS 2025 Release · 1966–2024

Northern Rough-winged Swallow Population Trend in Wyoming

All statesAerial insectivores

Northern Rough-winged Swallow in Wyoming has edged down: down 12% on the route-weighted index since 1970.

-12%Since 1970
98Routes In State
56Years

Notable Northern Rough-winged Swallow Trends in Wyoming

No notable trend signals for Northern Rough-winged Swallow in Wyoming. See the full index history below.

Northern Rough-winged Swallow Population Forecast in Wyoming

If the recent trend holds, Northern Rough-winged Swallow in Wyoming is projected to rise about 203% by 2029 — from 0.54 in 2024 to a central estimate of 1.6 (95% range 0.28–3.0). A 5-year backtest shows a typical error of ±147.7%, with 60% of held-out values landing inside the 95% band.

+203%Change by 2029
1.6Projected 2029 index
0.28–3.095% range
±147.7%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
20251.60.242.9
20261.60.253.0
20271.60.263.0
20281.60.273.0
20291.60.283.0

Northern Rough-winged Swallow Survey Routes in Wyoming

Routes recording Northern Rough-winged Swallow in Wyoming.
Dwyer16220171994
Sweetwater5720081981
Basin3019871972
Arminto1720042003
Seedskadee 21520242024
Clarkelen1119771974
Highlight1119821980
Mckinnon919801973
Carter920162016
Fontenelle820241984
Arvada820241987
Moran820162002
Rawlins619891989
Ne Entrance520211982
Meeteetse520211998
Gebo520222011
Green River519831977
Ryegrass520232021
Cody420241983
Savery419931992
Soda Well419821980
Mtn View420221982
Walcott420241989
Savery 2420222008
Seedskadee420231993

Northern Rough-winged Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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