BirdAnalyst
BBS Route · Louisiana · BCR 25

Derry 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 100 species recorded across 33 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 →
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 →
1990–2025Span
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 CardinalCardinalidae912025-13%1992
Yellow-breasted ChatIcteriidae782025+164%1992
Red-winged BlackbirdIcteridae492025+145%1992
American CrowCorvidae452025-41%1992
Carolina WrenTroglodytidae432025-31%1992
White-eyed VireoVireonidae312025-1%1992
Mourning DoveColumbidae292025+58%1992
Tufted TitmouseParidae282025+65%1992
Northern MockingbirdMimidae262025-32%1992
Red-bellied WoodpeckerPicidae252025+78%1992
Western Cattle-EgretArdeidae242025-42%1992
Purple MartinHirundinidae232025-25%1992
Red-eyed VireoVireonidae232025+63%1992
Pine WarblerParulidae232025+81%1992
Indigo BuntingCardinalidae222025+67%1992
Carolina ChickadeeParidae212025+90%1992
White IbisThreskiornithidae192025-23%2000
Hooded WarblerParulidae182025+148%1992
Barn SwallowHirundinidae172025-32%1992
Cliff SwallowHirundinidae172025+219%1997
Turkey VultureCathartidae152025+340%1996
Yellow-billed CuckooCuculidae142025+0%1992
Rock PigeonColumbidae142023+17%1997
Blue JayCorvidae122025-28%1992
Black VultureCathartidae122025+240%2002
Little Blue HeronArdeidae102025-34%1992
Brown-headed CowbirdIcteridae102025-45%1992
Orchard OrioleIcteridae92025-27%1992
Prairie WarblerParulidae92025+650%1994
Northern ParulaParulidae82025+31%1992
Summer TanagerCardinalidae72025-31%1992
Pileated WoodpeckerPicidae62025+0%1992
Fish CrowCorvidae62023+0%1993
Blue GrosbeakCardinalidae62025-17%1993
Common YellowthroatParulidae62025-46%1992
Wood ThrushTurdidae62025+0%1992
Blue-gray GnatcatcherPolioptilidae62025+380%1996
Great Crested FlycatcherTyrannidae52025-70%1992
Eastern Wood-PeweeTyrannidae42025-23%1992
Brown-headed NuthatchSittidae42024-45%1992

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