BirdAnalyst
BBS Route · Texas · BCR 36

San Ygnacio Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 80 species recorded across 12 survey years, no longer active.

80Species 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 →
12Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–1985Span
3Observers

Bird Species Found on Texas San Ygnacio

Top 40 of 80 species by most recent count. Each links to its species trend.

Species recorded on the San Ygnacio 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 MockingbirdMimidae841985-24%1970
Mourning DoveColumbidae541985+2%1970
Northern BobwhiteOdontophoridae501985+1%1970
Barn SwallowHirundinidae491985+98%1979
Great-tailed GrackleIcteridae481985-16%1970
PyrrhuloxiaCardinalidae441985-76%1970
Cactus WrenTroglodytidae331985+123%1970
Golden-fronted WoodpeckerPicidae261985-72%1970
Painted BuntingCardinalidae251985-36%1970
White-winged DoveColumbidae201985+105%1970
Scissor-tailed FlycatcherTyrannidae171985-23%1970
House SparrowPasseridae161985+14%1970
Neotropic CormorantPhalacrocoracidae151982-23%1978
Black-throated SparrowPasserellidae131985-91%1970
Cliff SwallowHirundinidae131985+430%1970
Common Ground DoveColumbidae121985+8%1970
Snowy EgretArdeidae121982+100%1980
Northern CardinalCardinalidae101985-85%1970
Bronzed CowbirdIcteridae91985-20%1970
VerdinRemizidae71982-70%1970
Turkey VultureCathartidae61985-72%1970
Black-crested TitmouseParidae61985+20%1971
Laughing GullLaridae61981n/an/a
Ladder-backed WoodpeckerPicidae51985-45%1970
Olive SparrowPasserellidae51982+57%1979
Cave SwallowHirundinidae51982+400%1980
Lesser NighthawkCaprimulgidae41985-59%1970
Bewick's WrenTroglodytidae41985-80%1970
Rock PigeonColumbidae41980+33%1970
Inca DoveColumbidae41982+100%1971
Black-bellied Whistling-DuckAnatidae41982+300%1981
KilldeerCharadriidae31982-70%1970
Harris's HawkAccipitridae31985-18%1970
Eastern Screech-OwlStrigidae31967n/an/a
Greater RoadrunnerCuculidae31985-70%1971
Yellow-billed CuckooCuculidae31985-8%1970
Brown-crested FlycatcherTyrannidae31985-82%1970
Chihuahuan RavenCorvidae31985+44%1971
Brown-headed CowbirdIcteridae31985-51%1970
Audubon's OrioleIcteridae31972+200%1967

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