BirdAnalyst
BBS Route · Texas · BCR 36

Cavasara Cr. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 84 species recorded across 13 survey years, still active.

84Species 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 →
13Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2023Span
3Observers

Bird Species Found on Texas Cavasara Cr.

Top 40 of 84 species by most recent count. Each links to its species trend.

Species recorded on the Cavasara Cr. 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
Mourning DoveColumbidae1122023+188%1997
Northern MockingbirdMimidae812023-7%1997
Northern CardinalCardinalidae492023+35%2009
Golden-fronted WoodpeckerPicidae332023+22%1997
Scissor-tailed FlycatcherTyrannidae282023+41%1997
Painted BuntingCardinalidae212023+271%1997
PyrrhuloxiaCardinalidae202023-20%1997
White-winged DoveColumbidae182023+188%1997
Turkey VultureCathartidae162023+29%1997
Bewick's WrenTroglodytidae152023+425%2007
Cactus WrenTroglodytidae142023-46%1997
Brown-crested FlycatcherTyrannidae132023+129%1997
Lark SparrowPasserellidae132023+50%1998
Greater RoadrunnerCuculidae122023+200%1997
Green JayCorvidae122023-23%2011
Ladder-backed WoodpeckerPicidae102023+214%2007
Curve-billed ThrasherMimidae102023+138%1999
Ash-throated FlycatcherTyrannidae102013+65%2009
Wild TurkeyPhasianidae91995n/an/a
Northern BobwhiteOdontophoridae82023-14%1997
Black-crested TitmouseParidae72013+64%2007
Great EgretArdeidae71997n/an/a
Crested CaracaraFalconidae62023+60%1997
Great-tailed GrackleIcteridae62023-58%1997
Yellow-billed CuckooCuculidae62023+38%2007
Brown-headed CowbirdIcteridae52023+48%1997
Common NighthawkCaprimulgidae52010+400%1996
European StarlingSturnidae52013+150%2011
Lesser NighthawkCaprimulgidae42023+229%1998
Blue GrosbeakCardinalidae42013+150%2010
Cliff SwallowHirundinidae42013+100%2007
Great KiskadeeTyrannidae42012+100%2008
Olive SparrowPasserellidae42023+16%2009
Couch's KingbirdTyrannidae32023+6%1997
KilldeerCharadriidae32013+50%2008
White-eyed VireoVireonidae32013-25%2009
American KestrelFalconidae32009n/an/a
Bell's VireoVireonidae32013+50%2009
Common Ground DoveColumbidae22023+7%1997
Chihuahuan RavenCorvidae22023-81%1997

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