BirdAnalyst
BBS Route · Texas · BCR 21

Dike Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 42 survey years, still active.

105Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2025Span
9Observers

Bird Species Found on Texas Dike

Top 40 of 105 species by most recent count. Each links to its species trend.

Species recorded on the Dike 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 CardinalCardinalidae672025+139%1972
Northern MockingbirdMimidae592025-3%1972
Mourning DoveColumbidae322025-64%1972
Eastern MeadowlarkIcteridae302025-67%1972
Barn SwallowHirundinidae282025-80%1972
DickcisselCardinalidae262025+19%1972
Carolina WrenTroglodytidae232025+571%1972
House SparrowPasseridae192025-88%1972
Indigo BuntingCardinalidae142025+29%1972
Purple MartinHirundinidae142025+5%1972
European StarlingSturnidae132025-59%1972
Red-winged BlackbirdIcteridae132025-61%1972
American CrowCorvidae122025-55%1972
Brown-headed CowbirdIcteridae122025-62%1972
Painted BuntingCardinalidae122025+213%1972
Blue JayCorvidae112025+4%1972
Carolina ChickadeeParidae102025+138%1972
Red-bellied WoodpeckerPicidae92025-62%1972
Cliff SwallowHirundinidae92025-74%2006
Eastern PhoebeTyrannidae82025+233%1984
Eurasian Collared-DoveColumbidae82024-32%2007
Scissor-tailed FlycatcherTyrannidae72025-82%1972
White-eyed VireoVireonidae72025+183%2005
Tufted TitmouseParidae52025+280%1972
KilldeerCharadriidae42018-58%1972
Yellow-billed CuckooCuculidae42025-71%1972
Eastern BluebirdTurdidae42025-78%1972
Red-eyed VireoVireonidae42025+60%1983
Downy WoodpeckerPicidae32025-39%1972
Common GrackleIcteridae32023-81%1972
Lark SparrowPasserellidae32024-72%1972
Blue GrosbeakCardinalidae32025-13%1972
White-breasted NuthatchSittidae32025-17%2002
Blue-gray GnatcatcherPolioptilidae32025-64%2008
White-winged DoveColumbidae32024-37%2009
House FinchFringillidae32024+200%2007
Great EgretArdeidae22022+180%1972
Turkey VultureCathartidae22025-76%1972
Great Horned OwlStrigidae22016-55%1972
Chimney SwiftApodidae22023-84%1972

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