BirdAnalyst
Species · BCR 34 · BBS 2025 Release · 1966–2024

Violet-green Swallow In Sierra Madre Occidental

All regionsSierra Madre OccidentalAerial insectivores

Violet-green Swallow in Sierra Madre Occidental has edged up: up 23% on the route-weighted index since 1970.

+23%Since 1970
32Routes In Region
54Years

Notable Signals

No notable trend signals for Violet-green Swallow in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Violet-green Swallow in Sierra Madre Occidental is projected to fall about 26% by 2029 — from 8.6 in 2024 to a central estimate of 6.4 (95% range 1.8–11). A 5-year backtest shows a typical error of ±23.8%, with 100% of held-out values landing inside the 95% band.

-26%Change by 2029
6.4Projected 2029 index
1.8–1195% range
±23.8%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
20256.51.911
20266.51.911
20276.51.911
20286.41.911
20296.41.811

Routes In Sierra Madre Occidental

Routes recording Violet-green Swallow in Sierra Madre Occidental.
Happy JackARIZONA1022024
AlpineARIZONA652023
Bartlett ResARIZONA302017
Forest LakesARIZONA282024
RuckerARIZONA272001
BlueARIZONA251991
PinetopARIZONA252022
Aztec PeakARIZONA231978
SprucedaleARIZONA222023
WilliamsARIZONA202019
MaineARIZONA162024
Mormon LakeARIZONA131975
FlagstaffARIZONA92022
PrescottARIZONA72022
Emory PassNEW-MEXICO72024
San SimonARIZONA61982
SunizonaARIZONA61996
Clay SpringARIZONA52009
Mt. GrahamARIZONA42023
Peña BlancaARIZONA32021
Tonto Vill.ARIZONA32021
RedingtonARIZONA32021
Carr MtnARIZONA22010
DragoonARIZONA22009
ReserveNEW-MEXICO22023

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