BirdAnalyst
Species · BCR 35 · BBS 2025 Release · 1966–2024

White-throated Swift In Chihuahuan Desert

All regionsChihuahuan DesertAerial insectivores

White-throated Swift in Chihuahuan Desert has collapsed: down 94% on the route-weighted index since 1970.

-94%Since 1970
23Routes In Region
47Years

Notable Signals

long arc declinecomputed index

White-throated Swift has collapsed in Chihuahuan Desert: down 94% on the route-weighted index since 1970.

Forecast

If the recent trend holds, White-throated Swift in Chihuahuan Desert is projected to fall about 100% by 2029 — from 0.07 in 2024 to a central estimate of 0.00 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±201.5%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.395% range
±201.5%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
20250.000.001.3
20260.000.001.3
20270.000.001.3
20280.000.001.3
20290.000.001.3

Routes In Chihuahuan Desert

Routes recording White-throated Swift in Chihuahuan Desert.
Bear MtnTEXAS212011
Hot SpringsTEXAS92006
Hatchet PeakNEW-MEXICO82023
ValentineTEXAS51987
SlaughterTEXAS51999
CloudcroftNEW-MEXICO32021
QueenNEW-MEXICO22015
Delaware CrkTEXAS21971
Sierra BlancTEXAS22005
JornadaNEW-MEXICO12019
RodeoNEW-MEXICO11994
Red RockNEW-MEXICO12011
PinonNEW-MEXICO12003
EscondidaNEW-MEXICO12012
Sunshine WllNEW-MEXICO12023
Black GapTEXAS12011
CornudasTEXAS11970
Casa PiedraTEXAS11992
CastolonTEXAS12024
ToyahvaleTEXAS11998
Salt FlatTEXAS12006
CanutilloTEXAS12009
Chisos BasinTEXAS12024

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