BirdAnalyst
BBS Route · Tennessee · BCR 27

Mansfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 46 survey years, still active.

106Species 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 →
46Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2024Span
9Observers

Bird Species Found on Tennessee Mansfield

Top 40 of 106 species by most recent count. Each links to its species trend.

Species recorded on the Mansfield 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
Indigo BuntingCardinalidae1312024+242%1970
Mourning DoveColumbidae862024+5%1970
Cliff SwallowHirundinidae802024+326%2021
Red-winged BlackbirdIcteridae792024+135%1970
American CrowCorvidae702024+236%1970
Northern CardinalCardinalidae682024+0%1970
Brown-headed CowbirdIcteridae592024+286%1971
European StarlingSturnidae582024+101%1970
Yellow-breasted ChatIcteriidae502024+335%1970
Purple MartinHirundinidae46202413×1971
Northern ParulaParulidae46202419×1977
Carolina WrenTroglodytidae442024+730%1971
Acadian FlycatcherTyrannidae39202427×1977
Blue-gray GnatcatcherPolioptilidae392024+322%1974
Red-bellied WoodpeckerPicidae382024+270%1971
Barn SwallowHirundinidae362024-22%1970
Field SparrowPasserellidae352024+215%1971
Turkey VultureCathartidae332024+900%1974
Tufted TitmouseParidae332024+268%1970
Eastern TowheePasserellidae312024+0%1970
Blue GrosbeakCardinalidae302024+433%1970
Common YellowthroatParulidae302024+5%1970
Northern MockingbirdMimidae302024-28%1970
Eastern BluebirdTurdidae292024+232%1970
Chipping SparrowPasserellidae28202411×1972
American GoldfinchFringillidae26202412×1970
Blue JayCorvidae252024-33%1970
White-eyed VireoVireonidae252024+347%1971
Eastern Wood-PeweeTyrannidae242024+413%1970
Yellow-billed CuckooCuculidae222024+135%1970
Wood ThrushTurdidae222024+229%1970
Kentucky WarblerParulidae192024+583%1979
Common GrackleIcteridae172024-77%1970
Summer TanagerCardinalidae172024+371%1971
Eastern PhoebeTyrannidae162024+500%1970
Eastern MeadowlarkIcteridae142024-67%1970
Red-eyed VireoVireonidae142024+514%1972
Carolina ChickadeeParidae132024+68%1971
Great Crested FlycatcherTyrannidae122024+238%1973
House SparrowPasseridae122024-9%1970

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