BirdAnalyst
BBS Route · Texas · BCR 21

Thornton 3 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 66 species recorded across 4 survey years, still active.

66Species 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 →
4Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2018–2025Span
2Observers

Bird Species Found on Texas Thornton 3

Top 40 of 66 species by most recent count. Each links to its species trend.

Species recorded on the Thornton 3 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 CardinalCardinalidae722025+90%2019
Painted BuntingCardinalidae372025+44%2019
Northern MockingbirdMimidae332025+3%2019
Western Cattle-EgretArdeidae322025+540%2018
American CrowCorvidae282025+170%2019
Cliff SwallowHirundinidae282025-60%2019
Carolina WrenTroglodytidae172025+144%2019
Scissor-tailed FlycatcherTyrannidae152025+38%2019
White-eyed VireoVireonidae152025+88%2019
Barn SwallowHirundinidae132025-66%2019
Mourning DoveColumbidae122025-13%2019
House SparrowPasseridae11202511×2019
Eastern BluebirdTurdidae112025-18%2019
Brown-headed CowbirdIcteridae112025+57%2019
Black VultureCathartidae102025-63%2019
European StarlingSturnidae102025+100%2019
Eastern PhoebeTyrannidae92025+100%2019
Lark SparrowPasserellidae82025-10%2019
Turkey VultureCathartidae72025-40%2019
Eastern MeadowlarkIcteridae72025-14%2019
Carolina ChickadeeParidae72025+146%2019
Red-bellied WoodpeckerPicidae62025+33%2019
Downy WoodpeckerPicidae52024+150%2018
KilldeerCharadriidae52025+67%2019
Chimney SwiftApodidae52024n/an/a
Common YellowthroatParulidae52024n/an/a
DickcisselCardinalidae42025+450%2019
White-winged DoveColumbidae42025+100%2019
Great Crested FlycatcherTyrannidae42025+100%2019
Red-shouldered HawkAccipitridae32025+150%2019
Crested CaracaraFalconidae32024+200%2018
Northern ParulaParulidae32018n/an/a
MallardAnatidae32019n/an/a
Great-tailed GrackleIcteridae32024n/an/a
Cave SwallowHirundinidae32025n/an/a
Rock PigeonColumbidae22018n/an/a
Summer TanagerCardinalidae22025-50%2018
Bewick's WrenTroglodytidae22025-50%2018
Tufted TitmouseParidae22025+100%2019
Blue-gray GnatcatcherPolioptilidae22025+0%2018

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