BirdAnalyst
BBS Route · Missouri · BCR 24

Williamsvill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 30 survey years, still active.

92Species 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
4Observers

Bird Species Found on Missouri Williamsvill

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Williamsvill 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 BuntingCardinalidae342025+12%1996
Yellow-breasted ChatIcteriidae332025+100%1996
Northern CardinalCardinalidae312025+26%1996
Red-eyed VireoVireonidae302025+56%1996
White-eyed VireoVireonidae292025+128%1996
Carolina WrenTroglodytidae282025+89%1996
Eastern Wood-PeweeTyrannidae272025+106%1996
American CrowCorvidae262025-44%1996
Cliff SwallowHirundinidae24201912×2018
Blue JayCorvidae202025-6%1997
Yellow-billed CuckooCuculidae192025-23%1996
Summer TanagerCardinalidae172025+9%1996
Red-bellied WoodpeckerPicidae152025+900%1996
Acadian FlycatcherTyrannidae152025+475%1996
Wood ThrushTurdidae152025-9%1997
Red-headed WoodpeckerPicidae152025+733%2000
White-breasted NuthatchSittidae142025+170%1996
Pine WarblerParulidae112025-5%1996
Mourning DoveColumbidae92025+78%1996
Pileated WoodpeckerPicidae92025+92%1996
Common YellowthroatParulidae92025+0%1996
Tufted TitmouseParidae92025-15%1996
Chipping SparrowPasserellidae82025-5%1996
Scarlet TanagerCardinalidae82025+233%1997
Northern ParulaParulidae82025+260%1996
Carolina ChickadeeParidae72025-43%1996
Blue-gray GnatcatcherPolioptilidae72025+67%1996
Eastern BluebirdTurdidae72025-30%1996
Brown-headed CowbirdIcteridae62025+146%1996
Blue-winged WarblerParulidae62024-50%1996
OvenbirdParulidae62025+14%1998
European StarlingSturnidae52025+154%1996
Orchard OrioleIcteridae52025-69%1996
American RobinTurdidae52025-71%1996
Downy WoodpeckerPicidae52025+117%1998
Turkey VultureCathartidae42024+18%1997
Red-winged BlackbirdIcteridae42025-39%1996
Barn SwallowHirundinidae42025-39%1996
Prairie WarblerParulidae42024+167%1996
Wild TurkeyPhasianidae42019+133%1999

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