BirdAnalyst
BBS Route · Texas · BCR 37

Oyster Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 23 survey years, still active.

103Species 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 →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
4Observers

Bird Species Found on Texas Oyster Lake

Top 40 of 103 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
Red-winged BlackbirdIcteridae2852024+34%1998
Barn SwallowHirundinidae2782024+41%1998
Brown PelicanPelecanidae247202443×2001
Mourning DoveColumbidae1152024-2%1998
Western Cattle-EgretArdeidae992024-77%1998
Cliff SwallowHirundinidae982024-48%1998
Eastern MeadowlarkIcteridae702024+117%1998
DickcisselCardinalidae692024+300%1998
Northern MockingbirdMimidae592024-41%1998
Turkey VultureCathartidae582024+432%1998
Brown-headed CowbirdIcteridae582024+428%1998
Great-tailed GrackleIcteridae532024+70%1998
Northern CardinalCardinalidae532024+65%1998
Purple MartinHirundinidae482024+165%1998
Forster's TernLaridae452023+303%1998
Laughing GullLaridae262024-56%1998
Least TernLaridae162024+127%1998
Black-bellied Whistling-DuckAnatidae162024+88%1998
Northern BobwhiteOdontophoridae162024-65%1998
Common GrackleIcteridae162024-52%1998
Sandwich TernLaridae152024-91%2021
Crested CaracaraFalconidae122024+338%2000
Royal TernLaridae112024+273%1999
Eastern BluebirdTurdidae11201011×2008
Black SkimmerLaridae10202419×2000
WilletScolopacidae102024+5%1998
KilldeerCharadriidae102024-75%1998
European StarlingSturnidae92024+22%1998
Mississippi KiteAccipitridae82023+100%1999
House SparrowPasseridae82023-29%1998
White-winged DoveColumbidae82024-48%2016
Swainson's HawkAccipitridae62021+233%2000
Black VultureCathartidae62024+0%2000
Boat-tailed GrackleIcteridae52023+153%1998
Carolina WrenTroglodytidae52024+100%2003
Black-crowned Night HeronArdeidae52024+75%2000
Snowy EgretArdeidae42024-62%1998
Green HeronArdeidae42024-67%1998
Great Horned OwlStrigidae42021n/an/a
Roseate SpoonbillThreskiornithidae32021-14%1999

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