BirdAnalyst
BBS Route · Texas · BCR 35

Altuda Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 43 survey years, no longer active.

77Species 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 →
43Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2023Span
7Observers

Bird Species Found on Texas Altuda

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Altuda 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
Cassin's SparrowPasserellidae352023-89%1969
Northern MockingbirdMimidae182023-91%1969
Scaled QuailOdontophoridae172023-76%1969
Ash-throated FlycatcherTyrannidae142023-27%1969
Black-throated SparrowPasserellidae122023-83%1969
Lark BuntingPasserellidae121981n/an/a
Scissor-tailed FlycatcherTyrannidae112023+400%1969
Turkey VultureCathartidae102022-7%1969
Chihuahuan MeadowlarkIcteridae92019-53%1969
Bell's VireoVireonidae72023+71%1969
Cactus WrenTroglodytidae52022-90%1969
Lark SparrowPasserellidae42023-12%1969
Chihuahuan RavenCorvidae42022+57%1973
Barn SwallowHirundinidae42021+50%1973
Eurasian Collared-DoveColumbidae42022-14%2015
Canyon TowheePasserellidae32016-79%1970
Common RavenCorvidae32023+200%1971
Western MeadowlarkIcteridae32023-83%1975
Mourning DoveColumbidae22023-85%1969
Horned LarkAlaudidae22009+127%1969
House FinchFringillidae22023-95%1969
PyrrhuloxiaCardinalidae22023-48%1969
Blue GrosbeakCardinalidae22023-88%1969
Loggerhead ShrikeLaniidae22018-60%1969
Yellow-breasted ChatIcteriidae22016-17%1977
VerdinRemizidae22023-61%1969
Great Horned OwlStrigidae22009+0%1982
Greater RoadrunnerCuculidae22018-40%1970
Cassin's KingbirdTyrannidae22023+0%1970
Cliff SwallowHirundinidae22021-30%1971
Northern CardinalCardinalidae22021+75%1998
Harris's HawkAccipitridae21998+0%1980
Cave SwallowHirundinidae22023+563%1984
Bullock's OrioleIcteridae22019+50%2005
Brown-crested FlycatcherTyrannidae21986n/an/a
Vermilion FlycatcherTyrannidae22023+33%2007
White-winged DoveColumbidae22022-67%2005
MallardAnatidae22018-40%2006
Red-tailed HawkAccipitridae12022+50%1971
Ladder-backed WoodpeckerPicidae12018-69%1969

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