BirdAnalyst
BBS Route · Texas · BCR 21

Duran Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 63 species recorded across 5 survey years, no longer active.

63Species 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 →
5Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–1999Span
2Observers

Bird Species Found on Texas Duran

Top 40 of 63 species by most recent count. Each links to its species trend.

Species recorded on the Duran 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
Scissor-tailed FlycatcherTyrannidae761999+77%1996
Mourning DoveColumbidae601999-31%1996
Northern MockingbirdMimidae581999-55%1996
Northern CardinalCardinalidae571999-33%1996
Eastern BluebirdTurdidae531999+467%1996
Purple MartinHirundinidae521999+490%1996
Painted BuntingCardinalidae421999-22%1996
Northern Rough-winged SwallowHirundinidae42199921×1996
Red-winged BlackbirdIcteridae411998+143%1996
Cliff SwallowHirundinidae40199921×1996
Brown-headed CowbirdIcteridae381999+60%1996
Turkey VultureCathartidae361999+1%1996
DickcisselCardinalidae301998-69%1995
Black VultureCathartidae291999+52%1996
Bewick's WrenTroglodytidae241999-49%1996
American CrowCorvidae221999+155%1996
Lark SparrowPasserellidae211999+2%1996
Barn SwallowHirundinidae211999+111%1996
Eastern MeadowlarkIcteridae201999-76%1996
Northern BobwhiteOdontophoridae191999-65%1996
Loggerhead ShrikeLaniidae191999+29%1996
Common NighthawkCaprimulgidae101999-48%1996
Black-chinned HummingbirdTrochilidae101999+100%1996
Eastern PhoebeTyrannidae101999+100%1996
Rufous-crowned SparrowPasserellidae101999-52%1996
Carolina ChickadeeParidae81996+60%1995
Wild TurkeyPhasianidae71999-13%1995
Western KingbirdTyrannidae71998+600%1997
Yellow-billed CuckooCuculidae61999-63%1996
Ash-throated FlycatcherTyrannidae41999+50%1996
Grasshopper SparrowPasserellidae41998-60%1995
House SparrowPasseridae41999-74%1996
Black-crested TitmouseParidae41998-85%1996
Horned LarkAlaudidae41998+100%1996
Belted KingfisherAlcedinidae31995n/an/a
Ladder-backed WoodpeckerPicidae31999+50%1995
Chimney SwiftApodidae31999+0%1995
Cassin's SparrowPasserellidae31999-46%1996
Canyon TowheePasserellidae31999-25%1996
Great Blue HeronArdeidae21998+0%1996

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