BirdAnalyst
BBS Route · Louisiana · BCR 26

Keystone Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 95 species recorded across 47 survey years, still active.

95Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2013Span
3Observers

Bird Species Found on Louisiana Keystone

Top 40 of 95 species by most recent count. Each links to its species trend.

Species recorded on the Keystone 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 IbisThreskiornithidae265201315×1988
Barn SwallowHirundinidae116201323×1990
Northern MockingbirdMimidae1142013+10%1969
Northern CardinalCardinalidae772013+32%1969
Red-winged BlackbirdIcteridae742013-73%1969
Western Cattle-EgretArdeidae622013+481%1970
House SparrowPasseridae542013-25%1969
Purple MartinHirundinidae492013+200%1969
Laughing GullLaridae421981n/an/a
Common GrackleIcteridae332013-68%1969
Northern Rough-winged SwallowHirundinidae312004+322%1973
European StarlingSturnidae302013+14%1969
Blue JayCorvidae282013-44%1969
Mourning DoveColumbidae252013+486%1969
Eastern MeadowlarkIcteridae232013-66%1969
Carolina WrenTroglodytidae212013+176%1969
Fish CrowCorvidae20201311×1972
Brown-headed CowbirdIcteridae182013-51%1969
Chimney SwiftApodidae172013+5%1970
House FinchFringillidae152008+567%1998
American CrowCorvidae132013-23%1969
Little Blue HeronArdeidae122013+33%1975
Northern BobwhiteOdontophoridae122013-67%1969
Yellow-crowned Night HeronArdeidae122013+317%1986
Eurasian Collared-DoveColumbidae102013+571%2002
White-eyed VireoVireonidae92013+567%1975
Great EgretArdeidae82013+417%1975
White-faced IbisThreskiornithidae82012+19%2002
Red-bellied WoodpeckerPicidae72013+240%1969
Common YellowthroatParulidae72013-18%1969
Carolina ChickadeeParidae72013+583%1975
Black-necked StiltRecurvirostridae72003+40%1991
Mississippi KiteAccipitridae72013+200%1998
Roseate SpoonbillThreskiornithidae72013+0%2005
KilldeerCharadriidae62013+71%1971
Downy WoodpeckerPicidae62013+325%1980
Boat-tailed GrackleIcteridae61992n/an/a
Eastern BluebirdTurdidae62013+300%2000
Rock PigeonColumbidae52012-20%1969
Loggerhead ShrikeLaniidae52013-83%1969

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