BirdAnalyst
BBS Route · Louisiana · BCR 37

Forked Island Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 87 species recorded across 12 survey years, still active.

87Species 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 →
12Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2008–2024Span
4Observers

Bird Species Found on Louisiana Forked Island

Top 40 of 87 species by most recent count. Each links to its species trend.

Species recorded on the Forked Island 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 BlackbirdIcteridae2942024-12%2010
Cliff SwallowHirundinidae1062024+32%2010
Purple MartinHirundinidae832024+105%2010
Boat-tailed GrackleIcteridae732024+33%2010
White IbisThreskiornithidae662024-46%2010
Orchard OrioleIcteridae622024-39%2010
Common YellowthroatParulidae472024+19%2010
Common GallinuleRallidae452024+49%2010
Barn SwallowHirundinidae452024-61%2010
Western Cattle-EgretArdeidae372024-65%2010
Northern MockingbirdMimidae332024-24%2010
Least BitternArdeidae322024+136%2010
Northern CardinalCardinalidae302024+9%2010
Cave SwallowHirundinidae302019+38%2016
Tricolored HeronArdeidae262024-82%2010
Snowy EgretArdeidae232024-90%2010
Black-necked StiltRecurvirostridae202024-86%2010
Mourning DoveColumbidae202024+133%2010
Eastern MeadowlarkIcteridae202024-59%2010
House SparrowPasseridae182024-66%2010
Roseate SpoonbillThreskiornithidae132024-89%2010
Great EgretArdeidae132024-89%2010
Green HeronArdeidae132024-15%2010
White-faced IbisThreskiornithidae122024-87%2010
Neotropic CormorantPhalacrocoracidae112024-85%2010
Eastern KingbirdTyrannidae112024-31%2010
Fish CrowCorvidae112019+8%2011
Brown-headed CowbirdIcteridae112024-71%2010
Common GrackleIcteridae112024-4%2011
Forster's TernLaridae102024+100%2014
Blue JayCorvidae102024+3%2010
Marsh WrenTroglodytidae102019+150%2012
King RailRallidae92024+57%2014
Yellow-crowned Night HeronArdeidae92024+800%2016
Purple GallinuleRallidae82024+320%2014
Downy WoodpeckerPicidae82024+40%2010
Red-bellied WoodpeckerPicidae82024-31%2010
American CrowCorvidae72024-21%2010
Black-bellied Whistling-DuckAnatidae62024-41%2010
Indigo BuntingCardinalidae62017-30%2011

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