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

White-throated Swift In Great Basin

All regionsGreat BasinAerial insectivores

White-throated Swift in Great Basin has surged: up 264% on the route-weighted index since 1975.

+264%Since 1975
44Routes In Region
50Years

Notable Signals

long arc increasecomputed index

White-throated Swift has surged in Great Basin: up 264% on the route-weighted index since 1975.

Forecast

If the recent trend holds, White-throated Swift in Great Basin is projected to rise about 306% by 2029 — from 0.16 in 2024 to a central estimate of 0.67 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±189.3%, with 100% of held-out values landing inside the 95% band.

+306%Change by 2029
0.67Projected 2029 index
0.00–1.695% range
±189.3%Backtest error
19722029
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
20250.650.001.5
20260.650.001.5
20270.660.001.5
20280.660.001.6
20290.670.001.6

Routes In Great Basin

Routes recording White-throated Swift in Great Basin.
AdrianOREGON272021
Moses CouleeWASHINGTON272023
Meadow VallyNEVADA162024
Comins LakeNEVADA112009
AlmoIDAHO62021
Humboldt NfNEVADA62006
Hardware RanchUTAH62018
HarringtonWASHINGTON62012
Calico SprNEVADA51974
Magic MtnIDAHO42024
MoraIDAHO42022
Ruby ValleyNEVADA42001
SnowdenWASHINGTON41994
WinthropWASHINGTON41983
Lake ChelanWASHINGTON42002
Big PineCALIFORNIA32007
DorrisCALIFORNIA32019
LeadoreIDAHO32010
Bald Mtn.NEVADA32024
Virgin CreekNEVADA32018
EllensburgWASHINGTON31984
YakimaWASHINGTON32004
WillisNEVADA22005
HikoNEVADA22009
JarbidgeNEVADA22014

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