BirdAnalyst
Species · BCR 18 · BBS 2025 Release · 1966–2024

Cave Swallow In Shortgrass Prairie

All regionsShortgrass PrairieAerial insectivores

Cave Swallow in Shortgrass Prairie has surged: up 85% on the route-weighted index since 2008.

+85%Since 2008TrendPercent 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 →
6Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
14YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 →

Cave Swallow has surged in Shortgrass Prairie: up 85% on the route-weighted index since 2008.

Routes In Shortgrass Prairie

Routes recording Cave Swallow in Shortgrass Prairie.
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 →
PostTEXAS202019
FloydadaTEXAS42018
CircleTEXAS22017
PlainsTEXAS22017
PlainsTEXAS12016
DoughertyTEXAS12016

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