BirdAnalyst
BBS Route · Tennessee · BCR 24

Glen Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 56 survey years, still active.

103Species 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 →
56Years 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
3Observers

Bird Species Found on Tennessee Glen

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Glen 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
European StarlingSturnidae2072025+542%1968
Mourning DoveColumbidae822025+186%1968
Indigo BuntingCardinalidae432025+104%1968
Barn SwallowHirundinidae332025-32%1968
American CrowCorvidae312025+87%1968
Rock PigeonColumbidae282025+147%1969
Northern MockingbirdMimidae272025+35%1968
Northern CardinalCardinalidae252025+64%1968
Blue GrosbeakCardinalidae232025+400%1968
American RobinTurdidae232025+207%1968
Red-winged BlackbirdIcteridae192025-44%1968
Field SparrowPasserellidae192025+17%1968
Eastern MeadowlarkIcteridae182025-40%1968
Purple MartinHirundinidae182025+829%1970
Eastern BluebirdTurdidae172025+77%1968
Song SparrowPasserellidae162025+783%1971
Common GrackleIcteridae142025-71%1968
Carolina WrenTroglodytidae13202515×1970
Chipping SparrowPasserellidae122025-6%1968
Western Cattle-EgretArdeidae122010+100%2009
Eastern TowheePasserellidae112025+363%1968
Red-bellied WoodpeckerPicidae102025+220%1969
Blue JayCorvidae92025-60%1968
Brown-headed CowbirdIcteridae82025+175%1968
DickcisselCardinalidae82025-49%1968
Canada GooseAnatidae82025-19%1994
Wild TurkeyPhasianidae82025+350%2010
Brown ThrasherMimidae72025+175%1968
Common YellowthroatParulidae72025-13%1969
American KestrelFalconidae72025+533%1972
House FinchFringillidae72025+22%1996
Tufted TitmouseParidae62025+77%1968
MallardAnatidae62019+60%1994
Turkey VultureCathartidae52025+47%1969
Eastern KingbirdTyrannidae52025+55%1968
Black VultureCathartidae52025+133%1997
Wood ThrushTurdidae42025+267%1968
Orchard OrioleIcteridae42025-35%1969
Red-shouldered HawkAccipitridae42025+100%2014
White-eyed VireoVireonidae42025+175%1978

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