BirdAnalyst
BBS Route · Texas · BCR 21

Bonner Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 108 species recorded across 28 survey years, still active.

108Species 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 →
28Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
5Observers

Bird Species Found on Texas Bonner

Top 40 of 108 species by most recent count. Each links to its species trend.

Species recorded on the Bonner 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
Cliff SwallowHirundinidae812025+80%1999
Northern CardinalCardinalidae432025-54%1998
Black VultureCathartidae322025+215%1998
Turkey VultureCathartidae242025+25%1998
Northern MockingbirdMimidae192025-67%1998
Neotropic CormorantPhalacrocoracidae182025+71%2008
Carolina WrenTroglodytidae152025+43%1998
Wood StorkCiconiidae151998n/an/a
Scissor-tailed FlycatcherTyrannidae142025-13%1998
American CrowCorvidae142025-79%1998
Field SparrowPasserellidae141994n/an/a
Mourning DoveColumbidae132025-67%1998
Blue JayCorvidae132025+32%1998
Brown-headed CowbirdIcteridae132025-83%1998
Painted BuntingCardinalidae122025-50%1998
Great EgretArdeidae102025+11%1999
Carolina ChickadeeParidae92025+16%1998
Yellow-billed CuckooCuculidae92025+0%1999
Rock PigeonColumbidae82024+300%1994
Red-bellied WoodpeckerPicidae82025-10%1999
White-eyed VireoVireonidae82025-51%1998
Eastern BluebirdTurdidae82025+75%1999
Barn SwallowHirundinidae62025-92%1998
Black-crested TitmouseParidae61994n/an/a
Downy WoodpeckerPicidae52025-38%1998
Common GrackleIcteridae52025-18%2004
Lark SparrowPasserellidae52025+40%2000
Eastern PhoebeTyrannidae52024+17%1999
American White PelicanPelecanidae52025-51%2001
Crested CaracaraFalconidae52022+17%2014
Great-tailed GrackleIcteridae42018-36%2008
Cave SwallowHirundinidae42025-83%2008
Wood DuckAnatidae42016+100%2007
Great Blue HeronArdeidae32025+0%2000
Eastern MeadowlarkIcteridae32025-77%1998
DickcisselCardinalidae32025-90%1998
Purple MartinHirundinidae32025+9%2001
Tufted TitmouseParidae32025-72%1998
Blue-gray GnatcatcherPolioptilidae32025-50%2006
Eurasian Collared-DoveColumbidae32025+0%2009

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