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

Violet-green Swallow In Chihuahuan Desert

All regionsChihuahuan DesertAerial insectivores

Violet-green Swallow in Chihuahuan Desert has increased: up 31% on the route-weighted index since 1975.

+31%Since 1975
21Routes In Region
47Years

Notable Signals

No notable trend signals for Violet-green Swallow in Chihuahuan Desert. See the full index history below.

Forecast

If the recent trend holds, Violet-green Swallow in Chihuahuan Desert is projected to fall about 69% by 2029 — from 1.2 in 2024 to a central estimate of 0.37 (95% range 0.00–7.5). A 5-year backtest shows a typical error of ±27.2%, with 100% of held-out values landing inside the 95% band.

-69%Change by 2029
0.37Projected 2029 index
0.00–7.595% range
±27.2%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
20250.650.007.7
20260.580.007.7
20270.510.007.6
20280.440.007.5
20290.370.007.5

Routes In Chihuahuan Desert

Routes recording Violet-green Swallow in Chihuahuan Desert.
CloudcroftNEW-MEXICO302024
CarrizozoNEW-MEXICO52024
Capitan Mtn.NEW-MEXICO32015
Hot SpringsTEXAS32000
GageNEW-MEXICO22014
LaborcitaNEW-MEXICO22005
PinonNEW-MEXICO22017
MarfaTEXAS22005
Ft. DavisTEXAS22021
DemingNEW-MEXICO11974
JornadaNEW-MEXICO12002
Red RockNEW-MEXICO12017
QueenNEW-MEXICO12010
Hatchet PeakNEW-MEXICO12011
AltudaTEXAS11994
ValentineTEXAS11980
Delaware CrkTEXAS12014
CornudasTEXAS11968
SlaughterTEXAS11976
Bear MtnTEXAS12016
Salt FlatTEXAS12009

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