BirdAnalyst
BBS Route · Florida · BCR 31

Polk City Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 93 species recorded across 51 survey years, still active.

93Species 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 →
51Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
3Observers

Bird Species Found on Florida Polk City

Top 40 of 93 species by most recent count. Each links to its species trend.

Species recorded on the Polk City 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 CardinalCardinalidae432024-10%1971
Black-bellied Whistling-DuckAnatidae42202413×2013
Northern ParulaParulidae282024+500%1971
Red-bellied WoodpeckerPicidae242024+78%1971
Mourning DoveColumbidae232024+47%1971
American CrowCorvidae212024-19%1971
Tufted TitmouseParidae182024-3%1971
Blue JayCorvidae172024-59%1971
Northern MockingbirdMimidae162024-79%1971
White IbisThreskiornithidae152024+13%1971
Great Crested FlycatcherTyrannidae132024+32%1971
Carolina WrenTroglodytidae132024-51%1971
Fish CrowCorvidae122024+5%1971
Red-winged BlackbirdIcteridae112024-80%1971
Sandhill CraneGruidae112024+160%1979
Boat-tailed GrackleIcteridae102024+150%1971
Chimney SwiftApodidae102024+67%1973
Glossy IbisThreskiornithidae82019+767%2003
Common GrackleIcteridae62024-89%1971
Downy WoodpeckerPicidae62024+320%1974
Red-shouldered HawkAccipitridae52024-13%1971
White-eyed VireoVireonidae52024-63%1971
Blue-gray GnatcatcherPolioptilidae52024+29%1977
American KestrelFalconidae52024+233%2016
Common YellowthroatParulidae42023-89%1971
Turkey VultureCathartidae32024-73%1971
Pileated WoodpeckerPicidae32024+0%1971
Pine WarblerParulidae32024-82%1971
Eastern BluebirdTurdidae32024-84%1971
LimpkinAramidae32024+67%2005
MallardAnatidae32013n/an/a
Great EgretArdeidae22024-58%1971
KilldeerCharadriidae22023+8%1971
Northern BobwhiteOdontophoridae22022-97%1971
Common Ground DoveColumbidae22022-91%1971
Black VultureCathartidae22024+23%1973
Red-headed WoodpeckerPicidae22013-17%1973
European StarlingSturnidae22023-85%1971
Eastern TowheePasserellidae22023-96%1971
Purple MartinHirundinidae22014-40%1971

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