BirdAnalyst
BBS Route · Florida · BCR 31

Card Sound Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 50 species recorded across 19 survey years, no longer active.

50Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2021Span
2Observers

Bird Species Found on Florida Card Sound

Top 40 of 50 species by most recent count. Each links to its species trend.

Species recorded on the Card Sound 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 CardinalCardinalidae402021-47%2001
White IbisThreskiornithidae242021+22%2001
Red-winged BlackbirdIcteridae242021-48%2001
Laughing GullLaridae142016+29%2001
White-eyed VireoVireonidae142021+27%2001
Red-bellied WoodpeckerPicidae112021-52%2001
White-crowned PigeonColumbidae92021+100%2001
Common GrackleIcteridae92021-57%2001
Black-whiskered VireoVireonidae62021-55%2001
Northern MockingbirdMimidae62021+133%2001
Common Ground DoveColumbidae52018+29%2001
Prairie WarblerParulidae42021-79%2001
Eurasian Collared-DoveColumbidae42018+33%2001
Green HeronArdeidae32014+0%2003
Mourning DoveColumbidae32021-52%2001
Gray KingbirdTyrannidae32021+5%2001
Black VultureCathartidae32016+0%2007
Magnificent FrigatebirdFregatidae22021+0%2003
Roseate SpoonbillThreskiornithidae22015+0%2000
Black-necked StiltRecurvirostridae22016+100%1998
KilldeerCharadriidae22003+100%1998
Red-shouldered HawkAccipitridae22016+25%2002
Great Crested FlycatcherTyrannidae22018-56%2001
Boat-tailed GrackleIcteridae22016-8%2002
Great Blue HeronArdeidae22018+33%2005
Turkey VultureCathartidae22018-17%2002
Common NighthawkCaprimulgidae22014-63%2002
Least TernLaridae12018+67%2001
Double-crested CormorantPhalacrocoracidae12021+15%2001
Snowy EgretArdeidae11998n/an/a
Tricolored HeronArdeidae12015+0%2002
Little Blue HeronArdeidae12014+0%1998
Black-crowned Night HeronArdeidae12000+0%1998
Clapper RailRallidae12003+0%1998
Mangrove CuckooCuculidae12016-17%2004
American CrowCorvidae12004-50%2000
Carolina WrenTroglodytidae12021-64%2001
Blue-gray GnatcatcherPolioptilidae12016-57%2001
Yellow-billed CuckooCuculidae12013-25%2003
Belted KingfisherAlcedinidae12012+0%2001

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