BirdAnalyst
BBS Route · Texas · BCR 36

Cavasara Cr. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 14 survey years, still active.

86Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
4Observers

Bird Species Found on Texas Cavasara Cr.

Top 40 of 86 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
Northern CardinalCardinalidae612025+69%2009
Mourning DoveColumbidae592025+166%1997
Northern BobwhiteOdontophoridae352025-16%1997
Golden-fronted WoodpeckerPicidae352025+36%1997
Bewick's WrenTroglodytidae342025+700%2007
Northern MockingbirdMimidae242025-28%1997
PyrrhuloxiaCardinalidae182025-19%1997
White-winged DoveColumbidae172025+363%1997
Brown-crested FlycatcherTyrannidae172025+186%1997
Scissor-tailed FlycatcherTyrannidae162025+30%1997
VerdinRemizidae162025+800%2009
Cactus WrenTroglodytidae152025-56%1997
Black-throated SparrowPasserellidae132025+122%1998
Lark SparrowPasserellidae132023+50%1998
Olive SparrowPasserellidae112025-25%2009
Curve-billed ThrasherMimidae102023+138%1999
Wild TurkeyPhasianidae91995n/an/a
Painted BuntingCardinalidae82025+371%1997
Turkey VultureCathartidae72025-23%1997
Great EgretArdeidae71997n/an/a
Great KiskadeeTyrannidae62025+150%2008
Lesser NighthawkCaprimulgidae52025+143%1998
Brown-headed CowbirdIcteridae52023+48%1997
Common NighthawkCaprimulgidae52010+400%1996
Ash-throated FlycatcherTyrannidae52025+17%2009
Green JayCorvidae52025-14%2011
European StarlingSturnidae52013+150%2011
Common Ground DoveColumbidae42025-26%1997
Greater RoadrunnerCuculidae42025+260%1997
Couch's KingbirdTyrannidae42025-25%1997
Blue GrosbeakCardinalidae42025+300%2010
Cliff SwallowHirundinidae42013+100%2007
Cave SwallowHirundinidae42025-90%1997
Crested CaracaraFalconidae32025+33%1997
Black-bellied Whistling-DuckAnatidae32025-11%1999
KilldeerCharadriidae32013+50%2008
White-eyed VireoVireonidae32013-25%2009
American KestrelFalconidae32009n/an/a
Bell's VireoVireonidae32013+50%2009
Ladder-backed WoodpeckerPicidae22025+143%2007

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.