BirdAnalyst
BBS Route · Florida · BCR 31

Polk City Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 52 survey years, still active.

94Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
3Observers

Bird Species Found on Florida Polk City

Top 40 of 94 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 CardinalCardinalidae522025-2%1971
Black-bellied Whistling-DuckAnatidae51202518×2013
Northern ParulaParulidae412025+538%1971
White IbisThreskiornithidae242025+49%1971
Red-bellied WoodpeckerPicidae212025+73%1971
Blue JayCorvidae202025-57%1971
Mourning DoveColumbidae192025+31%1971
American CrowCorvidae182025+7%1971
Great Crested FlycatcherTyrannidae152025+29%1971
Tufted TitmouseParidae142025-5%1971
Carolina WrenTroglodytidae132025-49%1971
Chimney SwiftApodidae122025+50%1973
Great EgretArdeidae102025-32%1971
Northern MockingbirdMimidae102025-81%1971
Downy WoodpeckerPicidae102025+480%1974
Red-shouldered HawkAccipitridae82025+25%1971
Fish CrowCorvidae82025-22%1971
Boat-tailed GrackleIcteridae82025+190%1971
White-eyed VireoVireonidae72025-47%1971
Sandhill CraneGruidae72025+170%1979
Western Cattle-EgretArdeidae62025-97%1971
House FinchFringillidae62025+50%2011
Turkey VultureCathartidae42025-65%1971
Black VultureCathartidae42025-39%1973
Red-winged BlackbirdIcteridae42025-78%1971
Common YellowthroatParulidae42023-89%1971
Wild TurkeyPhasianidae42025+150%2010
Great Blue HeronArdeidae32025-14%1971
Little Blue HeronArdeidae32025-44%1971
Pileated WoodpeckerPicidae32025+13%1971
Common GrackleIcteridae32025-88%1971
Eastern BluebirdTurdidae32025-87%1971
MallardAnatidae32013n/an/a
Yellow-throated VireoVireonidae32025+0%2018
AnhingaAnhingidae22025+0%1974
Green HeronArdeidae22025-67%1971
KilldeerCharadriidae22025-25%1971
Northern BobwhiteOdontophoridae22022-97%1971
Common Ground DoveColumbidae22022-91%1971
Red-headed WoodpeckerPicidae22013-17%1973

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