BirdAnalyst
BBS Route · Louisiana · BCR 25

Grayson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 83 species recorded across 13 survey years, still active.

83Species 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 →
13Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2005–2021Span
5Observers

Bird Species Found on Louisiana Grayson

Top 40 of 83 species by most recent count. Each links to its species trend.

Species recorded on the Grayson 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
White-eyed VireoVireonidae472021+94%2007
Hooded WarblerParulidae372021+75%2007
Yellow-breasted ChatIcteriidae322021+63%2007
Carolina WrenTroglodytidae312021+420%2007
Northern CardinalCardinalidae302021-45%2007
Red-eyed VireoVireonidae242021+97%2007
Indigo BuntingCardinalidae232021-43%2007
Barn SwallowHirundinidae232021-54%2007
American CrowCorvidae162021-74%2007
Tufted TitmouseParidae152021+42%2007
Mourning DoveColumbidae132021+36%2007
Blue JayCorvidae132021-2%2007
Carolina ChickadeeParidae102021+220%2007
Wood ThrushTurdidae102021-13%2007
Red-bellied WoodpeckerPicidae92021+35%2007
Common YellowthroatParulidae82021+75%2007
Summer TanagerCardinalidae72021+7%2007
Cliff SwallowHirundinidae72017n/an/a
Black VultureCathartidae62017-27%2009
Eastern KingbirdTyrannidae62017+22%2009
Pine WarblerParulidae62021-45%2007
Yellow-throated VireoVireonidae62021+117%2009
Eastern Wood-PeweeTyrannidae52021+11%2007
Swainson's WarblerParulidae52021+83%2013
Rock PigeonColumbidae52008+150%2006
Eastern TowheePasserellidae52021-47%2008
Blue-gray GnatcatcherPolioptilidae52021+100%2008
Kentucky WarblerParulidae52021+15%2013
Hairy WoodpeckerPicidae52019+250%2014
Northern BobwhiteOdontophoridae42018-43%2007
Yellow-billed CuckooCuculidae42021+50%2007
Great Crested FlycatcherTyrannidae42021+29%2007
Brown-headed CowbirdIcteridae42021+433%2007
Northern MockingbirdMimidae42021-49%2007
Brown ThrasherMimidae42019+100%2007
European StarlingSturnidae42009n/an/a
Red-shouldered HawkAccipitridae32021+22%2007
Acadian FlycatcherTyrannidae32021+133%2007
Prairie WarblerParulidae32021+46%2007
Downy WoodpeckerPicidae32019-36%2011

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