BirdAnalyst
BBS Route · Wisconsin · BCR 23

N Freedom Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 119 species recorded across 58 survey years, still active.

119Species 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 →
58Years 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
4Observers

Bird Species Found on Wisconsin N Freedom

Top 40 of 119 species by most recent count. Each links to its species trend.

Species recorded on the N Freedom 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 BlackbirdIcteridae1272024-1%1968
American RobinTurdidae1042024+285%1968
Mourning DoveColumbidae552024+76%1968
Indigo BuntingCardinalidae522024+109%1968
Barn SwallowHirundinidae432024+247%1968
American CrowCorvidae422024+106%1968
Song SparrowPasserellidae422024+30%1968
Gray CatbirdMimidae322024+169%1968
Common YellowthroatParulidae312024+92%1968
Chipping SparrowPasserellidae302024+100%1968
Northern CardinalCardinalidae292024+57%1968
Northern House WrenTroglodytidae282024+254%1968
Eastern Wood-PeweeTyrannidae262024+200%1968
House SparrowPasseridae232024-77%1968
European StarlingSturnidae212024+100%1968
Rock PigeonColumbidae192024+137%1968
Blue JayCorvidae182024+42%1968
Brown-headed CowbirdIcteridae172024+21%1968
Cedar WaxwingBombycillidae172024+148%1969
House FinchFringillidae152024+344%1995
Cliff SwallowHirundinidae142024+79%1970
Rose-breasted GrosbeakCardinalidae132024+76%1968
Chimney SwiftApodidae122024-13%1968
American GoldfinchFringillidae122024-49%1968
Yellow WarblerParulidae122024+239%1968
KilldeerCharadriidae112024+107%1968
Eastern BluebirdTurdidae112024+50%1970
Common GrackleIcteridae102024-16%1968
Eastern KingbirdTyrannidae82024+56%1968
Field SparrowPasserellidae82024-52%1968
American RedstartParulidae82024+675%1972
Ruffed GrousePhasianidae81971n/an/a
Red-bellied WoodpeckerPicidae72024+250%1968
DickcisselCardinalidae72024-87%1968
Red-eyed VireoVireonidae72024+93%1968
Blue-winged WarblerParulidae72024+250%1970
Black-capped ChickadeeParidae72024+133%1968
Eastern MeadowlarkIcteridae62024-73%1968
Warbling VireoVireonidae62024+50%1968
Purple MartinHirundinidae62024+83%2022

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