BirdAnalyst
BBS Route · Louisiana · BCR 26

Atchafalaya Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 91 species recorded across 33 survey years, still active.

91Species 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 →
33Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1989–2025Span
3Observers

Bird Species Found on Louisiana Atchafalaya

Top 40 of 91 species by most recent count. Each links to its species trend.

Species recorded on the Atchafalaya 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 IbisThreskiornithidae1262025+159%1992
Carolina WrenTroglodytidae1022025-6%1991
Northern CardinalCardinalidae972025+13%1991
White-eyed VireoVireonidae852025-26%1991
Prothonotary WarblerParulidae572025-25%1991
Red-bellied WoodpeckerPicidae482025+101%1991
Painted BuntingCardinalidae442025+40%1991
Tufted TitmouseParidae432025+77%1991
Brown-headed CowbirdIcteridae412025-29%1991
Red-eyed VireoVireonidae402025-26%1991
Indigo BuntingCardinalidae372025-53%1991
Yellow-billed CuckooCuculidae312025+41%1991
Summer TanagerCardinalidae272025+81%1991
Carolina ChickadeeParidae242025-6%1991
Common GrackleIcteridae202025-81%1991
Little Blue HeronArdeidae172025-91%1991
Acadian FlycatcherTyrannidae172025-30%1991
American CrowCorvidae172025-42%1991
Yellow-breasted ChatIcteriidae162025-83%1991
Blue-gray GnatcatcherPolioptilidae162025-31%1991
Common YellowthroatParulidae142025-67%1991
Pileated WoodpeckerPicidae132025+55%1991
Hooded WarblerParulidae112025-50%1991
Yellow-crowned Night HeronArdeidae92025-84%1991
Yellow-throated VireoVireonidae92025+64%1991
Turkey VultureCathartidae82025+183%1991
Northern ParulaParulidae82025-29%1991
Wood StorkCiconiidae82003n/an/a
Downy WoodpeckerPicidae72025-5%1991
Great Blue HeronArdeidae62019-82%1991
Cliff SwallowHirundinidae62025+15%1998
Snowy EgretArdeidae52019-78%1991
Chimney SwiftApodidae52025-44%1991
Great Crested FlycatcherTyrannidae52025+211%1991
Blue JayCorvidae52025-67%1991
Yellow-throated WarblerParulidae52025+233%1997
White-faced IbisThreskiornithidae52015+400%2009
Red-shouldered HawkAccipitridae42025-65%1991
Orchard OrioleIcteridae42025-41%1991
Double-crested CormorantPhalacrocoracidae41996n/an/a

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