BirdAnalyst
BBS Route · Texas · BCR 21

Three Rivers Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 98 species recorded across 24 survey years, still active.

98Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2024Span
9Observers

Bird Species Found on Texas Three Rivers

Top 40 of 98 species by most recent count. Each links to its species trend.

Species recorded on the Three Rivers route.
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 →TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Northern MockingbirdMimidae1112024-55%1996
Mourning DoveColumbidae1042024+9%1996
Northern CardinalCardinalidae962024+314%1996
White-winged DoveColumbidae942024+169%1996
Great-tailed GrackleIcteridae532024+289%1996
Scissor-tailed FlycatcherTyrannidae482024-55%1996
Brown-headed CowbirdIcteridae482024-22%1996
Brown-crested FlycatcherTyrannidae472024+81%1996
Bewick's WrenTroglodytidae442024-2%1996
Painted BuntingCardinalidae422024-17%1996
Golden-fronted WoodpeckerPicidae382024+35%1996
Olive SparrowPasserellidae362024+39%1996
Cave SwallowHirundinidae332022-60%1997
Northern BobwhiteOdontophoridae252024-28%1996
Black VultureCathartidae222024+186%1998
Couch's KingbirdTyrannidae212024+478%1996
Yellow-billed CuckooCuculidae192024-41%1996
Purple MartinHirundinidae182024-14%1996
Cliff SwallowHirundinidae172024-81%1996
Eastern MeadowlarkIcteridae152024-68%1996
Lark SparrowPasserellidae142024-62%1996
House SparrowPasseridae142024-34%1996
Long-billed ThrasherMimidae142024+230%1996
Barn SwallowHirundinidae132024-56%1996
Great KiskadeeTyrannidae132024+117%2013
Inca DoveColumbidae122024+157%1996
Little Blue HeronArdeidae112018+333%1996
Black-crested TitmouseParidae112024-38%1996
Eastern BluebirdTurdidae102024+225%1998
Northern Rough-winged SwallowHirundinidae102013-16%2008
Eurasian Collared-DoveColumbidae92024+189%2012
Ladder-backed WoodpeckerPicidae82024+5%1996
White-eyed VireoVireonidae82024-42%1996
Carolina WrenTroglodytidae82024+220%1999
Greater RoadrunnerCuculidae72024+300%1997
Bronzed CowbirdIcteridae72024-62%1996
PyrrhuloxiaCardinalidae72024-32%1996
House FinchFringillidae72024+150%2002
Common Ground DoveColumbidae62024-81%1996
Turkey VultureCathartidae62024-78%1996

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.