BirdAnalyst
Species · BCR 33 · BBS 2025 Release · 1966–2024

Barn Swallow In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsAerial insectivores

Barn Swallow in Sonoran and Mojave Deserts has edged down: down 19% on the route-weighted index since 1970.

-19%Since 1970
55Routes In Region
56Years

Notable Signals

No notable trend signals for Barn Swallow in Sonoran and Mojave Deserts. See the full index history below.

Forecast

If the recent trend holds, Barn Swallow in Sonoran and Mojave Deserts is projected to rise about 993% by 2029 — from 0.07 in 2024 to a central estimate of 0.73 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±336.9%, with 100% of held-out values landing inside the 95% band.

+993%Change by 2029
0.73Projected 2029 index
0.00–2.295% range
±336.9%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
20250.730.002.2
20260.730.002.2
20270.730.002.2
20280.730.002.2
20290.730.002.2

Routes In Sonoran and Mojave Deserts

Routes recording Barn Swallow in Sonoran and Mojave Deserts.
BlytheCALIFORNIA201979
Palo VerdeCALIFORNIA182023
NilandCALIFORNIA142023
Alamo RiverCALIFORNIA122018
Ajo 2ARIZONA82013
GoldstoneCALIFORNIA51998
Lucerne ValCALIFORNIA51989
CimaCALIFORNIA51972
DatelandARIZONA42021
Haiwee ResCALIFORNIA42005
LagunaARIZONA32023
AntaresARIZONA32018
Palo VerdeARIZONA32013
HopeARIZONA32009
Cutter 2ARIZONA32017
New RiverARIZONA22016
Cibola LakeARIZONA22012
ArabyARIZONA22018
Willow BeachARIZONA21989
Casa GrandeARIZONA22001
BarstowCALIFORNIA21996
PearblossomCALIFORNIA22018
Death ValleyCALIFORNIA21994
Kelso ValleyCALIFORNIA22013
BrawleyCALIFORNIA22010

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