BirdAnalyst
BBS Route · Texas · BCR 37

Oyster Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 104 species recorded across 24 survey years, still active.

104Species 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
5Observers

Bird Species Found on Texas Oyster Lake

Top 40 of 104 species by most recent count. Each links to its species trend.

Species recorded on the Oyster Lake 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
Laughing GullLaridae2972025-63%1998
Red-winged BlackbirdIcteridae1602025+5%1998
Mourning DoveColumbidae782025+5%1998
DickcisselCardinalidae702025+360%1998
Great-tailed GrackleIcteridae602025+27%1998
Northern MockingbirdMimidae522025-31%1998
Sandwich TernLaridae472025-68%2021
Eastern MeadowlarkIcteridae452025+75%1998
Northern BobwhiteOdontophoridae402025-37%1998
Western Cattle-EgretArdeidae372025-74%1998
Northern CardinalCardinalidae372025+63%1998
Purple MartinHirundinidae362025+226%1998
Common GrackleIcteridae312025-28%1998
Forster's TernLaridae282025+158%1998
Cliff SwallowHirundinidae182025-58%1998
Brown-headed CowbirdIcteridae172025+284%1998
Snowy EgretArdeidae152025-21%1998
Common NighthawkCaprimulgidae142025-73%1998
Black-bellied Whistling-DuckAnatidae122025+141%1998
Turkey VultureCathartidae122025+332%1998
Royal TernLaridae112024+273%1999
Eastern BluebirdTurdidae11201011×2008
Black SkimmerLaridae10202419×2000
Barn SwallowHirundinidae102025+37%1998
Brown PelicanPelecanidae9202528×2001
Great EgretArdeidae82025-68%1998
WilletScolopacidae82025+30%1998
Carolina WrenTroglodytidae62025+200%2003
Painted BuntingCardinalidae62025+14%1999
Tricolored HeronArdeidae52025-36%1998
Seaside SparrowPasserellidae52025+0%1999
Loggerhead ShrikeLaniidae52025-77%1998
House SparrowPasseridae52025-25%1998
Black-crowned Night HeronArdeidae52024+75%2000
Roseate SpoonbillThreskiornithidae42025-7%1999
American CrowCorvidae42025+38%1998
European StarlingSturnidae42025+6%1998
Eurasian Collared-DoveColumbidae42025-13%2008
Great Horned OwlStrigidae42021n/an/a
Green HeronArdeidae32025-73%1998

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