BirdAnalyst
BBS Route · Wisconsin · BCR 12

Crandon Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 143 species recorded across 55 survey years, still active.

143Species 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 →
55Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
8Observers

Bird Species Found on Wisconsin Crandon

Top 40 of 143 species by most recent count. Each links to its species trend.

Species recorded on the Crandon 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 VireoVireonidae512024+107%1969
American RobinTurdidae252024-40%1969
OvenbirdParulidae232024-17%1969
Cliff SwallowHirundinidae202019-78%1969
Ring-billed GullLaridae13201513×2005
American RedstartParulidae122024+16%1969
Song SparrowPasserellidae102024-64%1969
Indigo BuntingCardinalidae102024-46%1969
Least FlycatcherTyrannidae92024-43%1969
American CrowCorvidae92024-73%1969
Common YellowthroatParulidae92024+14%1969
Black-capped ChickadeeParidae92024+343%1969
Chipping SparrowPasserellidae82024-53%1969
Eastern Wood-PeweeTyrannidae72024-10%1969
Brewer's BlackbirdIcteridae52016-41%1969
Common GrackleIcteridae52024-64%1969
Rose-breasted GrosbeakCardinalidae52024-67%1969
Chestnut-sided WarblerParulidae52024-47%1969
Red-breasted NuthatchSittidae52019+125%1973
Yellow-billed CuckooCuculidae41980+200%1972
Eastern KingbirdTyrannidae42024-63%1969
European StarlingSturnidae42024-97%1969
American GoldfinchFringillidae42024-65%1969
White-throated SparrowPasserellidae42024-59%1969
Black-throated Green WarblerParulidae42024+67%1969
Wood ThrushTurdidae42024-47%1969
VeeryTurdidae42024-67%1969
Mourning DoveColumbidae42024+157%1979
Eastern PhoebeTyrannidae32024+0%1969
Blue JayCorvidae32024-35%1969
Brown-headed CowbirdIcteridae32024-85%1969
Red-winged BlackbirdIcteridae32024-81%1969
Barn SwallowHirundinidae32024-68%1969
Hermit ThrushTurdidae32024-71%1969
Yellow-bellied SapsuckerPicidae32022-8%1971
Red-bellied WoodpeckerPicidae32024+150%2018
LeConte's SparrowPasserellidae32010n/an/a
Common LoonGaviidae22024-77%1970
Wood DuckAnatidae21997+50%1973
KilldeerCharadriidae22023-55%1969

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