BirdAnalyst
BBS Route · Wisconsin · BCR 23

Cochrane Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 48 survey years, still active.

122Species 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 →
48Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2024Span
13Observers

Bird Species Found on Wisconsin Cochrane

Top 40 of 122 species by most recent count. Each links to its species trend.

Species recorded on the Cochrane 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-winged BlackbirdIcteridae1372024+90%1968
American RobinTurdidae642024-1%1968
Canada GooseAnatidae582024+256%1995
American CrowCorvidae572024+66%1968
House SparrowPasseridae282024-81%1968
Barn SwallowHirundinidae272024+204%1968
Gray CatbirdMimidae272024+43%1968
Rock PigeonColumbidae262024+208%1969
Baltimore OrioleIcteridae252023+13%1968
Song SparrowPasserellidae242024-43%1968
Common YellowthroatParulidae212024-15%1968
Common GrackleIcteridae192024-52%1968
Northern CardinalCardinalidae182024+3%1968
American GoldfinchFringillidae142024+2%1968
Northern Rough-winged SwallowHirundinidae142022+171%1971
Northern House WrenTroglodytidae142024-28%1968
Mourning DoveColumbidae122024-51%1968
Brown-headed CowbirdIcteridae122024-40%1968
Cliff SwallowHirundinidae122024+870%1973
Eastern BluebirdTurdidae112024-18%1968
Grasshopper SparrowPasserellidae101987+0%1968
Chimney SwiftApodidae102024+10%1969
Indigo BuntingCardinalidae92024-58%1968
Blue JayCorvidae82024-38%1968
Red-bellied WoodpeckerPicidae72024+164%1968
European StarlingSturnidae72024+12%1968
Common NighthawkCaprimulgidae61966n/an/a
Eastern Wood-PeweeTyrannidae62024-44%1968
Chipping SparrowPasserellidae62024+67%1968
Eastern TowheePasserellidae52024-45%1968
Red-eyed VireoVireonidae52024+200%1968
Chestnut-sided WarblerParulidae52022+100%1982
Wild TurkeyPhasianidae52023-33%2002
House FinchFringillidae52023-26%1996
Double-crested CormorantPhalacrocoracidae52009+400%1995
KilldeerCharadriidae42024-39%1968
Red-headed WoodpeckerPicidae42009-61%1968
Western MeadowlarkIcteridae41985-83%1968
Field SparrowPasserellidae42024-95%1968
Rose-breasted GrosbeakCardinalidae42024-5%1968

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