BirdAnalyst
BBS Route · Tennessee · BCR 28

Willis Sprng Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 75 species recorded across 29 survey years, still active.

75Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2023Span
2Observers

Bird Species Found on Tennessee Willis Sprng

Top 40 of 75 species by most recent count. Each links to its species trend.

Species recorded on the Willis Sprng 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
Red-eyed VireoVireonidae282023-43%1996
Carolina WrenTroglodytidae272023+164%1996
Carolina ChickadeeParidae152023-36%1996
Blue-headed VireoVireonidae142023+400%1998
Hooded WarblerParulidae132023-37%1996
Northern ParulaParulidae122023+37%1996
Indigo BuntingCardinalidae112023-77%1996
Eastern TowheePasserellidae92023-39%1996
American CrowCorvidae82023-76%1996
Scarlet TanagerCardinalidae82023-2%1996
Louisiana WaterthrushParulidae82022+167%1997
Acadian FlycatcherTyrannidae72023-43%1996
White-breasted NuthatchSittidae72023+25%1996
Tufted TitmouseParidae62023-17%1996
Wood ThrushTurdidae52023-61%1996
Turkey VultureCathartidae41994n/an/a
Broad-winged HawkAccipitridae42023+80%1997
Downy WoodpeckerPicidae42023-8%1996
Swainson's WarblerParulidae42023+75%2000
Worm-eating WarblerParulidae42022-42%1996
Blue-gray GnatcatcherPolioptilidae42023-79%1996
Common GrackleIcteridae42016+300%1997
Cedar WaxwingBombycillidae42014n/an/a
Pileated WoodpeckerPicidae32023-47%1996
American GoldfinchFringillidae32023+0%1996
Northern CardinalCardinalidae32023+125%1996
Yellow-throated WarblerParulidae32023-54%1996
Black-throated Green WarblerParulidae32023-67%1996
Red-bellied WoodpeckerPicidae32023+71%1998
Chimney SwiftApodidae32023+33%2001
Mourning DoveColumbidae22023-40%1997
Blue JayCorvidae22023-8%1996
Pine WarblerParulidae22023-14%1996
Prairie WarblerParulidae22023-64%1996
Yellow-breasted ChatIcteriidae22023-59%1996
Brown ThrasherMimidae22010+100%1999
Eastern Whip-poor-willCaprimulgidae22022+25%1997
Barn SwallowHirundinidae21995n/an/a
American RobinTurdidae22022+33%2001
Eastern BluebirdTurdidae22023+25%2004

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