BirdAnalyst
BBS Route · Louisiana · BCR 25

Derry 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 100 species recorded across 32 survey years, still active.

100Species 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 →
32Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1990–2024Span
3Observers

Bird Species Found on Louisiana Derry 2

Top 40 of 100 species by most recent count. Each links to its species trend.

Species recorded on the Derry 2 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
Northern CardinalCardinalidae822024-24%1992
Yellow-breasted ChatIcteriidae522024+140%1992
Carolina WrenTroglodytidae412024-34%1992
American CrowCorvidae362024-44%1992
Red-winged BlackbirdIcteridae332024+149%1992
White-eyed VireoVireonidae292024-2%1992
Hooded WarblerParulidae292024+168%1992
Indigo BuntingCardinalidae282024+79%1992
Northern MockingbirdMimidae282024-40%1992
Barn SwallowHirundinidae252024-36%1992
Tufted TitmouseParidae242024+39%1992
Pine WarblerParulidae232024+60%1992
Red-bellied WoodpeckerPicidae222024+54%1992
Western Cattle-EgretArdeidae212024-37%1992
Blue JayCorvidae212024-18%1992
Cliff SwallowHirundinidae202024+367%1997
Carolina ChickadeeParidae162024+67%1992
Red-eyed VireoVireonidae152024+27%1992
Rock PigeonColumbidae142023+17%1997
Purple MartinHirundinidae132024-51%1992
Brown-headed CowbirdIcteridae122024-47%1992
Yellow-billed CuckooCuculidae112024-29%1992
Downy WoodpeckerPicidae102024+500%1993
Prairie WarblerParulidae102024+725%1994
Little Blue HeronArdeidae92024-44%1992
Summer TanagerCardinalidae92024-25%1992
Fish CrowCorvidae62023+0%1993
Common GrackleIcteridae62024+39%1992
Common YellowthroatParulidae62024-54%1992
Eastern BluebirdTurdidae62024-30%1992
White IbisThreskiornithidae52023-57%2000
Orchard OrioleIcteridae52024-41%1992
Blue GrosbeakCardinalidae52024+6%1993
Blue-gray GnatcatcherPolioptilidae52024+360%1996
Pileated WoodpeckerPicidae42023-39%1992
Chimney SwiftApodidae42023-53%1992
Brown-headed NuthatchSittidae42024-45%1992
Red-headed WoodpeckerPicidae42024+300%1993
Black-bellied Whistling-DuckAnatidae42024-40%2022
Wild TurkeyPhasianidae42024+100%2022

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