BirdAnalyst
BBS Route · Wisconsin · BCR 23

Brownsville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 43 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 →
43Years 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
10Observers

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 BlackbirdIcteridae1802025-41%1975
European StarlingSturnidae822025-82%1975
American RobinTurdidae792025+84%1975
House SparrowPasseridae572025-61%1975
Song SparrowPasserellidae532025+5%1975
Common GrackleIcteridae482025-43%1975
Mourning DoveColumbidae472025+14%1975
Canada GooseAnatidae402021+113%1999
American CrowCorvidae322025-12%1975
Northern House WrenTroglodytidae252025+312%1975
Northern CardinalCardinalidae242025+711%1976
American GoldfinchFringillidae222025+100%1975
Chipping SparrowPasserellidae212025+569%1976
Rock PigeonColumbidae202025-65%1975
Barn SwallowHirundinidae202025+65%1975
DickcisselCardinalidae192025+150%1978
Indigo BuntingCardinalidae182025+433%1975
Ring-billed GullLaridae182010n/an/a
Common YellowthroatParulidae152025+116%1975
Yellow WarblerParulidae142025+800%1975
KilldeerCharadriidae132025-30%1975
Brown-headed CowbirdIcteridae132025-43%1975
Horned LarkAlaudidae122025+7%1975
Tree SwallowHirundinidae112025+200%1976
Wild TurkeyPhasianidae112025+123%2006
Northern ShovelerAnatidae102014n/an/a
Baltimore OrioleIcteridae92025+53%1976
Cedar WaxwingBombycillidae92025+400%1981
Turkey VultureCathartidae92025+450%1999
Chimney SwiftApodidae82025-50%1976
Great Crested FlycatcherTyrannidae82025+320%1975
Warbling VireoVireonidae82025+238%1975
Gray CatbirdMimidae82025-33%1976
Sandhill CraneGruidae82025+200%2004
Trumpeter SwanAnatidae82022n/an/a
Blue JayCorvidae72025+138%1975
Savannah SparrowPasserellidae72025-97%1975
Red-bellied WoodpeckerPicidae62025+100%1992
Purple MartinHirundinidae52025-74%1975
Downy WoodpeckerPicidae52025+33%1980

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