BirdAnalyst
BBS Route · Texas · BCR 36

Guerra Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 22 survey years, still active.

92Species 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 →
22Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2025Span
7Observers

Bird Species Found on Texas Guerra

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Guerra 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 DoveColumbidae772025+10%1990
Northern CardinalCardinalidae492025+487%1990
Golden-fronted WoodpeckerPicidae462025+63%1990
Northern BobwhiteOdontophoridae282025+50%1990
Bewick's WrenTroglodytidae27202519×1995
Cave SwallowHirundinidae262025-62%1990
Ash-throated FlycatcherTyrannidae252025+638%1993
Northern MockingbirdMimidae232025+6%1990
White-winged DoveColumbidae222025+118%1990
Brown-crested FlycatcherTyrannidae212025+37%1990
Olive SparrowPasserellidae17202513×1992
Western Cattle-EgretArdeidae16200916×2007
Painted BuntingCardinalidae152025+469%1992
Turkey VultureCathartidae132025-27%1990
Great-tailed GrackleIcteridae132025-19%1990
Cactus WrenTroglodytidae122025-61%1990
Common Ground DoveColumbidae92025-10%1990
Crested CaracaraFalconidae92025-8%1990
Scissor-tailed FlycatcherTyrannidae82025+96%1990
Brown-headed CowbirdIcteridae72025+188%1990
Bronzed CowbirdIcteridae72018-76%1990
Red-winged BlackbirdIcteridae72023-30%1990
PyrrhuloxiaCardinalidae72025+44%1990
White-eyed VireoVireonidae72018+200%1996
VerdinRemizidae6202513×2007
Greater RoadrunnerCuculidae52025+111%1994
Eurasian Collared-DoveColumbidae52025-24%2018
Scaled QuailOdontophoridae42025-42%1991
Audubon's OrioleIcteridae42023+100%1996
Altamira OrioleIcteridae41999+100%1990
Long-billed ThrasherMimidae42018+167%1992
Black-tailed GnatcatcherPolioptilidae42018n/an/a
Great EgretArdeidae42025n/an/a
Rock PigeonColumbidae31988n/an/a
Black VultureCathartidae32025-13%1990
Vermilion FlycatcherTyrannidae32018+25%1994
Black-throated SparrowPasserellidae32025+60%1990
Cassin's SparrowPasserellidae32025+269%1990
Bullock's OrioleIcteridae32025+786%1993
Blue GrosbeakCardinalidae32025+38%1993

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