BirdAnalyst
BBS Route · West Virginia · BCR 28

Spencer Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 26 survey years, still active.

99Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1986–2023Span
6Observers

Bird Species Found on West Virginia Spencer

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Spencer 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 StarlingSturnidae962023+71%1999
American RobinTurdidae472023+0%1999
Northern CardinalCardinalidae392023+36%1999
Red-winged BlackbirdIcteridae372023+68%1999
Barn SwallowHirundinidae362023-6%1999
Turkey VultureCathartidae362023+114%2000
Song SparrowPasserellidae352023-30%1999
American CrowCorvidae292023-13%1999
Brown-headed CowbirdIcteridae282023+3%1999
Carolina WrenTroglodytidae272023+38%1999
Tufted TitmouseParidae262023+2%1999
Indigo BuntingCardinalidae252023-45%1999
Mourning DoveColumbidae232023+91%1999
Common GrackleIcteridae222023-27%1999
Yellow WarblerParulidae202023-41%1999
Red-eyed VireoVireonidae192023-39%1999
Eastern BluebirdTurdidae142023-42%1999
Field SparrowPasserellidae132023-20%1999
Chipping SparrowPasserellidae122023-54%1999
Eastern TowheePasserellidae122023-8%1999
Blue JayCorvidae112023+157%1999
Northern MockingbirdMimidae112023+3%1999
Eastern MeadowlarkIcteridae102023-63%1999
Red-bellied WoodpeckerPicidae92023+67%1999
Eastern PhoebeTyrannidae92023-43%1999
Eastern Wood-PeweeTyrannidae92023+50%1999
Common YellowthroatParulidae92023-45%1999
White-eyed VireoVireonidae82023-35%1999
Wood ThrushTurdidae82023-19%1999
American GoldfinchFringillidae72023-69%1999
Canada GooseAnatidae72023-52%2014
Gray CatbirdMimidae62023-49%1999
White-breasted NuthatchSittidae62023+38%1999
Blue-gray GnatcatcherPolioptilidae62023-57%1999
Downy WoodpeckerPicidae52023+50%1999
Yellow-throated WarblerParulidae52023+29%1999
House SparrowPasseridae52023-70%1999
Brown ThrasherMimidae52023+450%1999
Tree SwallowHirundinidae52023+40%2007
Warbling VireoVireonidae42023-62%1999

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