BirdAnalyst
BBS Route · Wisconsin · BCR 12

Crandon Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 143 species recorded across 56 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 →
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 →
1967–2025Span
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 VireoVireonidae502025+89%1969
American RobinTurdidae302025-35%1969
OvenbirdParulidae242025-17%1969
Indigo BuntingCardinalidae172025-30%1969
Chipping SparrowPasserellidae152025-46%1969
American RedstartParulidae152025+16%1969
Ring-billed GullLaridae13201513×2005
Least FlycatcherTyrannidae122025-41%1969
Song SparrowPasserellidae122025-56%1969
Common GrackleIcteridae102025-36%1969
Blue JayCorvidae82025-6%1969
Chestnut-sided WarblerParulidae82025-56%1969
Red-winged BlackbirdIcteridae62025-77%1969
Rose-breasted GrosbeakCardinalidae62025-58%1969
Yellow WarblerParulidae62025-29%1969
Common YellowthroatParulidae62025-9%1969
Wood ThrushTurdidae62025-20%1969
VeeryTurdidae62025-62%1969
Eastern Wood-PeweeTyrannidae52025-5%1969
American CrowCorvidae52025-71%1969
Brewer's BlackbirdIcteridae52016-41%1969
Cedar WaxwingBombycillidae52025+100%1969
Yellow-bellied SapsuckerPicidae52025-17%1971
Yellow-billed CuckooCuculidae41980+200%1972
Eastern PhoebeTyrannidae42025+50%1969
Black-and-white WarblerParulidae42025+0%1969
Black-throated Green WarblerParulidae42025+83%1969
Mourning WarblerParulidae42025-18%1970
European StarlingSturnidae32025-96%1969
Purple FinchFringillidae32025-70%1970
Swamp SparrowPasserellidae32025+100%1973
Barn SwallowHirundinidae32024-68%1969
Tree SwallowHirundinidae32025-79%1969
Blackburnian WarblerParulidae32025+30%1969
Northern House WrenTroglodytidae32025-71%1969
Black-capped ChickadeeParidae32025+200%1969
Hermit ThrushTurdidae32025-59%1969
Mourning DoveColumbidae32025+71%1979
Red-bellied WoodpeckerPicidae32024+150%2018
LeConte's SparrowPasserellidae32010n/an/a

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