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

Tropical Kingbird Population Trend in Texas

All statesAerial insectivores

Tropical Kingbird in Texas has surged: up 471% on the route-weighted index since 2004.

+471%Since 2004TrendPercent 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 →
7Routes 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 →
15YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Tropical Kingbird 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Tropical Kingbird has surged in Texas: up 471% on the route-weighted index since 2004.

Tropical Kingbird Survey Routes in Texas

Routes recording Tropical Kingbird 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 →
Lag Atascosa520242008
Raymondville420242004
L. Atascosa Nwr220062005
Encinal220102010
Heidelberg220232019
George West120232023
Castolon120111999

Tropical Kingbird Population Trend in Other States

arizona

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