BirdAnalyst
Species · New Mexico · BBS 2025 Release · 1966–2024

Tree Swallow Population Trend in New Mexico

All statesAerial insectivores

Tree Swallow in New Mexico has surged: up 123% on the route-weighted index since 1970.

+123%Since 1970
12Routes In State
48Years

Notable Tree Swallow Trends in New Mexico

long arc increasecomputed index

Tree Swallow has surged in New Mexico: up 123% on the route-weighted index since 1970.

Tree Swallow Population Forecast in New Mexico

If the recent trend holds, Tree Swallow in New Mexico is projected to fall about 39% by 2029 — from 0.33 in 2024 to a central estimate of 0.20 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±21.9%, with 100% of held-out values landing inside the 95% band.

-39%Change by 2029
0.20Projected 2029 index
0.00–1.095% range
±21.9%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
20250.220.001.0
20260.210.001.0
20270.210.001.0
20280.200.001.0
20290.200.001.0

Tree Swallow Survey Routes in New Mexico

Routes recording Tree Swallow in New Mexico.
Cebolla2420181977
Angel Fire 21520242005
Angel Fire920021992
Gallinas320211993
Farmington219871987
Maxwell220142014
Ojo Sarco120071968
Fence Lake120111987
Shiprock119991999
San Antonio119771977
Roswell119761976
Mcgaffey119981998

Tree Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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