BirdAnalyst
BBS Route · Wisconsin · BCR 23

Cochrane Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 123 species recorded across 49 survey years, still active.

123Species 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 →
49Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
13Observers

Bird Species Found on Wisconsin Cochrane

Top 40 of 123 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
Canada GooseAnatidae1002025+422%1995
Red-winged BlackbirdIcteridae882025+76%1968
American RobinTurdidae812025+26%1968
American CrowCorvidae432025+63%1968
Barn SwallowHirundinidae342025+228%1968
Brown-headed CowbirdIcteridae282025-44%1968
Bank SwallowHirundinidae262025-1%1968
Northern House WrenTroglodytidae262025-17%1968
Song SparrowPasserellidae232025-43%1968
Wood DuckAnatidae232025+660%1970
Indigo BuntingCardinalidae222025-63%1968
House SparrowPasseridae192025-87%1968
Gray CatbirdMimidae172025+41%1968
American GoldfinchFringillidae162025-6%1968
Northern CardinalCardinalidae162025-1%1968
European StarlingSturnidae152025-5%1968
Northern Rough-winged SwallowHirundinidae142022+171%1971
Common YellowthroatParulidae142025-32%1968
Red-eyed VireoVireonidae132025+156%1968
Blue JayCorvidae122025-45%1968
Mourning DoveColumbidae112025-61%1968
Common GrackleIcteridae112025-62%1968
Warbling VireoVireonidae112025-24%1968
Grasshopper SparrowPasserellidae101987+0%1968
Eastern BluebirdTurdidae102025+29%1968
Red-bellied WoodpeckerPicidae92025+109%1968
Chipping SparrowPasserellidae92025+27%1968
Rose-breasted GrosbeakCardinalidae82025-24%1968
Eastern Wood-PeweeTyrannidae72025-26%1968
Common NighthawkCaprimulgidae61966n/an/a
Eastern TowheePasserellidae62025-45%1968
Yellow WarblerParulidae62025-56%1968
Rock PigeonColumbidae62025+183%1969
Chimney SwiftApodidae62025+0%1969
KilldeerCharadriidae52025-44%1968
Cliff SwallowHirundinidae52025+800%1973
Chestnut-sided WarblerParulidae52022+100%1982
Wild TurkeyPhasianidae52023-33%2002
Red-headed WoodpeckerPicidae42009-61%1968
Great Crested FlycatcherTyrannidae42025-61%1968

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