BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Northern Rough-winged Swallow In Great Basin

All regionsGreat BasinAerial insectivores

Northern Rough-winged Swallow in Great Basin has held roughly steady: up 1% on the route-weighted index since 1970.

+1%Since 1970
203Routes In Region
56Years

Notable Signals

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

Forecast

If the recent trend holds, Northern Rough-winged Swallow in Great Basin is projected to stay roughly flat through 2029, near 2.4 (95% range 0.09–4.7). A 5-year backtest shows a typical error of ±29.2%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
2.4Projected 2029 index
0.09–4.795% range
±29.2%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
20252.40.134.7
20262.40.124.7
20272.40.114.7
20282.40.104.7
20292.40.094.7

Routes In Great Basin

Routes recording Northern Rough-winged Swallow in Great Basin.
OrdnanceOREGON1361973
BlyOREGON1291994
GardnervilleNEVADA702006
NewcastleUTAH622022
MaldenWASHINGTON622024
Toiyabe NfNEVADA542024
Ewan 2WASHINGTON522024
PromontoryUTAH502010
HarwoodWASHINGTON471997
Glenns FerryIDAHO321986
Walla WallaWASHINGTON301993
HartlineWASHINGTON282006
BakerIDAHO242024
HikoNEVADA242023
Cedar HillIDAHO202024
RanchograndeNEVADA202024
Hanford SiteWASHINGTON201996
SelahWASHINGTON192014
Calico SprNEVADA181974
MesaWASHINGTON182008
PomonaWASHINGTON181999
YakimaWASHINGTON142023
TriangleIDAHO122021
PomeroyWASHINGTON122024
Horn RapidsWASHINGTON122015

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