BirdAnalyst
BBS Route · Wisconsin · BCR 12

Cavour Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 132 species recorded across 27 survey years, still active.

132Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2025Span
2Observers

Bird Species Found on Wisconsin Cavour

Top 40 of 132 species by most recent count. Each links to its species trend.

Species recorded on the Cavour 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
Canada GooseAnatidae1702025+236%2013
Red-eyed VireoVireonidae762025+67%2000
OvenbirdParulidae652025+13%2000
American RobinTurdidae332025+6%2000
American CrowCorvidae302025-45%2000
Yellow-bellied SapsuckerPicidae242025+124%2000
Rose-breasted GrosbeakCardinalidae242025+32%2000
Nashville WarblerParulidae242025+11%2000
Least FlycatcherTyrannidae212025+159%2000
Mourning DoveColumbidae162025-3%2000
Chestnut-sided WarblerParulidae162025-23%2000
Blue JayCorvidae142025+28%2000
Indigo BuntingCardinalidae142025+15%2000
Mourning WarblerParulidae132025-48%2000
Red-winged BlackbirdIcteridae122025+7%2000
VeeryTurdidae122025+64%2000
Common GrackleIcteridae112025+62%2001
Wood ThrushTurdidae112025+320%2007
Black-throated Green WarblerParulidae102025-27%2000
Black-capped ChickadeeParidae102025-71%2000
Ruffed GrousePhasianidae10202512×2007
Pileated WoodpeckerPicidae92025+42%2000
Common YellowthroatParulidae82025-22%2000
Red-breasted NuthatchSittidae82025-40%2000
Hermit ThrushTurdidae82025-20%2000
Bank SwallowHirundinidae82009n/an/a
Black-and-white WarblerParulidae72025+67%2000
Hairy WoodpeckerPicidae62025+100%2000
Common RavenCorvidae62025+107%2000
European StarlingSturnidae62025-78%2000
White-throated SparrowPasserellidae62025-77%2000
Blackburnian WarblerParulidae62025+130%2000
Wild TurkeyPhasianidae62025+200%2014
Downy WoodpeckerPicidae52025-50%2001
Song SparrowPasserellidae52025-80%2000
Scarlet TanagerCardinalidae52024+11%2000
Gray CatbirdMimidae52025+13%2004
Trumpeter SwanAnatidae52022n/an/a
Eastern Wood-PeweeTyrannidae42025+83%2000
American GoldfinchFringillidae42025-40%2000

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