BirdAnalyst
BBS Route · Wisconsin · BCR 23

Brownsville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 42 survey years, still active.

112Species 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 →
42Years 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
9Observers

Bird Species Found on Wisconsin Brownsville

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Brownsville 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 BlackbirdIcteridae1662024-19%1975
American RobinTurdidae802024+46%1975
House SparrowPasseridae462024-60%1975
Northern House WrenTroglodytidae462024+352%1975
Canada GooseAnatidae402021+113%1999
Chipping SparrowPasserellidae392024+646%1976
Common GrackleIcteridae372024-40%1975
Barn SwallowHirundinidae272024+102%1975
Northern CardinalCardinalidae262024+767%1976
Song SparrowPasserellidae232024-16%1975
Indigo BuntingCardinalidae232024+322%1975
Common YellowthroatParulidae202024+132%1975
Tree SwallowHirundinidae202024+136%1976
American CrowCorvidae192024-12%1975
Ring-billed GullLaridae182010n/an/a
American GoldfinchFringillidae172024+91%1975
DickcisselCardinalidae172024+200%1978
European StarlingSturnidae152024-88%1975
House FinchFringillidae152024-6%1995
Wild TurkeyPhasianidae152024+77%2006
Yellow WarblerParulidae122024+575%1975
Blue JayCorvidae112024+263%1975
Baltimore OrioleIcteridae112022+12%1976
Cedar WaxwingBombycillidae112024+340%1981
Mourning DoveColumbidae102024+2%1975
Black-capped ChickadeeParidae102024+725%1981
Turkey VultureCathartidae102024+400%1999
Northern ShovelerAnatidae102014n/an/a
Rock PigeonColumbidae92024-15%1975
Brown-headed CowbirdIcteridae82024-60%1975
Trumpeter SwanAnatidae82022n/an/a
KilldeerCharadriidae72024-28%1975
Great Crested FlycatcherTyrannidae62022+200%1975
Horned LarkAlaudidae62024+7%1975
BobolinkIcteridae52021-59%1975
Warbling VireoVireonidae52024+275%1975
Cliff SwallowHirundinidae52021+200%1980
Black-crowned Night HeronArdeidae51990+400%1976
Sandhill CraneGruidae52024+367%2004
Purple MartinHirundinidae42021-84%1975

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