BirdAnalyst
BBS Route · Mississippi · BCR 26

Isola Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 89 species recorded across 27 survey years, still active.

89Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2022Span
9Observers

Bird Species Found on Mississippi Isola

Top 40 of 89 species by most recent count. Each links to its species trend.

Species recorded on the Isola 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
Cliff SwallowHirundinidae125202221×2008
Red-winged BlackbirdIcteridae832022-68%1970
DickcisselCardinalidae582022+373%1970
Mourning DoveColumbidae492022-53%1970
Northern CardinalCardinalidae372022+6%1970
Indigo BuntingCardinalidae332022+250%1971
Northern Rough-winged SwallowHirundinidae332022+200%2000
Common GrackleIcteridae322022-81%1970
Blue JayCorvidae282022+181%1970
Great EgretArdeidae222022+277%1989
KilldeerCharadriidae202022+457%1971
Tufted TitmouseParidae182022+26%1989
Black-bellied Whistling-DuckAnatidae172022+55%2021
Yellow-billed CuckooCuculidae162022+81%1970
Canada GooseAnatidae162000-23%1992
Barn SwallowHirundinidae15202212×1975
Carolina WrenTroglodytidae122022+500%1987
Brown-headed CowbirdIcteridae112022-61%1970
Purple MartinHirundinidae102022+172%1970
Yellow-breasted ChatIcteriidae102022+107%1971
Eastern TowheePasserellidae82022+833%1987
Red-bellied WoodpeckerPicidae62022+170%1970
House SparrowPasseridae62022-97%1970
Northern MockingbirdMimidae62022+16%1970
Brown ThrasherMimidae62022+200%1973
Eurasian Collared-DoveColumbidae62022-22%2008
Roseate SpoonbillThreskiornithidae62021n/an/a
Great Blue HeronArdeidae52022+111%1991
Double-crested CormorantPhalacrocoracidae52021+80%2008
European StarlingSturnidae42022+79%1970
Eastern MeadowlarkIcteridae42022-49%1970
Prothonotary WarblerParulidae42022+40%1987
Summer TanagerCardinalidae42022+100%1992
Carolina ChickadeeParidae32022+60%1987
American RobinTurdidae32022+100%1971
MallardAnatidae32021+117%1991
Loggerhead ShrikeLaniidae32022+217%1990
Northern BobwhiteOdontophoridae22021-93%1970
Red-headed WoodpeckerPicidae22022+150%1971
Field SparrowPasserellidae22021+0%1968

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