BirdAnalyst
Species · Texas · BBS 2025 Release · 1966–2024

Tree Swallow Population Trend in Texas

All statesAerial insectivores

Tree Swallow in Texas has collapsed: down 83% on the route-weighted index since 1990.

-83%Since 1990TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
17Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Tree Swallow Trends in TexasNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Tree Swallow in Texas. See the full index history below.

Tree Swallow Survey Routes in Texas

Routes recording Tree Swallow in Texas.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Raymondville719901990
Caledonia520102010
Chandler 2520112011
Crossroads320132011
Town Bluff220082008
Peach Creek219711971
Oak Grove 2220122012
Osage220152015
Friona220012001
Stowell220181972
Easton220131997
Cottonwood120172017
Hinkles Fer119721972
Walburg120232012
Carlos120122012
Pidcoke120132013
Athens120082008

Tree Swallow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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