BirdAnalyst
BBS Route · Louisiana · BCR 26

Berwick Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 90 species recorded across 24 survey years, still active.

90Species 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 →
1987–2018Span
8Observers

Bird Species Found on Louisiana Berwick

Top 40 of 90 species by most recent count. Each links to its species trend.

Species recorded on the Berwick 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
Wood StorkCiconiidae1202010+700%2000
Common GrackleIcteridae1032018-83%1989
Northern CardinalCardinalidae742018+103%1989
American CrowCorvidae442018+120%1989
Carolina WrenTroglodytidae402018-16%1989
European StarlingSturnidae392018-17%1989
Red-winged BlackbirdIcteridae392018-32%1989
Boat-tailed GrackleIcteridae392018+700%1992
Western Cattle-EgretArdeidae372018+30%1989
Purple MartinHirundinidae342018+7%1989
Prothonotary WarblerParulidae312018-54%1989
Little Blue HeronArdeidae282018-70%1989
Barn SwallowHirundinidae272018+293%1989
White-eyed VireoVireonidae262018-44%1989
Northern MockingbirdMimidae202018+25%1989
Black VultureCathartidae192018+267%2006
Great EgretArdeidae182018-87%1989
Mourning DoveColumbidae172018+800%1990
Carolina ChickadeeParidae172018-55%1989
AnhingaAnhingidae152018+586%1991
Painted BuntingCardinalidae132018-60%1989
Red-bellied WoodpeckerPicidae122018+59%1989
Northern ParulaParulidae102018-50%1989
Pileated WoodpeckerPicidae92018+100%1989
Bald EagleAccipitridae82013+250%2009
Rock PigeonColumbidae72001-6%1989
Blue JayCorvidae72018+19%1989
Brown-headed CowbirdIcteridae72018-61%1989
House SparrowPasseridae72018-59%1989
Royal TernLaridae71989n/an/a
Chimney SwiftApodidae62018+3%1989
Indigo BuntingCardinalidae62018+110%1989
Black-crowned Night HeronArdeidae62018+100%1998
Mississippi KiteAccipitridae52018+500%1989
Barred OwlStrigidae52011+40%1989
Yellow-billed CuckooCuculidae52018+56%1989
Common NighthawkCaprimulgidae52018-19%1989
Fish CrowCorvidae52018+66%1989
Loggerhead ShrikeLaniidae52018-35%1989
Green HeronArdeidae42018-43%1989

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