BirdAnalyst
BBS Route · Tennessee · BCR 27

Humboldt Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 109 species recorded across 40 survey years, still active.

109Species 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 →
40Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
9Observers

Bird Species Found on Tennessee Humboldt

Top 40 of 109 species by most recent count. Each links to its species trend.

Species recorded on the Humboldt 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 BuntingCardinalidae1042025+144%1968
European StarlingSturnidae1002025+515%1968
Barn SwallowHirundinidae1002025+596%1968
Northern MockingbirdMimidae892025+36%1968
Mourning DoveColumbidae782025+5%1968
Northern CardinalCardinalidae752025-10%1968
Red-winged BlackbirdIcteridae612025+67%1968
Purple MartinHirundinidae612025+727%1968
Eastern BluebirdTurdidae48202514×1968
Blue JayCorvidae472025+65%1968
Carolina WrenTroglodytidae402025+164%1968
American RobinTurdidae392025+307%1968
Chipping SparrowPasserellidae362025+700%2002
Brown-headed CowbirdIcteridae34202516×1969
Turkey VultureCathartidae34202540×2003
Eastern TowheePasserellidae332025+164%1968
Blue GrosbeakCardinalidae322025+458%1968
American CrowCorvidae292025+84%1968
Red-bellied WoodpeckerPicidae262025+173%1968
Yellow-billed CuckooCuculidae232025+15%1969
Field SparrowPasserellidae222025+139%1968
Tufted TitmouseParidae222025+342%1968
House SparrowPasseridae212025-89%1968
Eastern MeadowlarkIcteridae182025-79%1968
Common YellowthroatParulidae182025-23%1968
House FinchFringillidae182025+292%2004
Fish CrowCorvidae172025+183%2022
Yellow-breasted ChatIcteriidae162025+275%1968
Eastern PhoebeTyrannidae162025+750%1972
Cliff SwallowHirundinidae152025+39%2022
Eastern Wood-PeweeTyrannidae142025+571%1968
Common GrackleIcteridae142025-72%1968
Brown ThrasherMimidae132025+90%1968
Bank SwallowHirundinidae132011n/an/a
Orchard OrioleIcteridae122025-29%1968
DickcisselCardinalidae122025+14%1968
Great EgretArdeidae122025+300%2001
Downy WoodpeckerPicidae112025+400%1968
KilldeerCharadriidae102025+13%1968
Mississippi KiteAccipitridae92025+267%2016

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