BirdAnalyst
BBS Route · Wisconsin · BCR 23

Rolling Grnd Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 55 survey years, still active.

105Species 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 →
55Years 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
3Observers

Bird Species Found on Wisconsin Rolling Grnd

Top 40 of 105 species by most recent count. Each links to its species trend.

Species recorded on the Rolling Grnd 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 BlackbirdIcteridae1132025+13%1968
European StarlingSturnidae452025+74%1968
Barn SwallowHirundinidae392025+196%1968
House SparrowPasseridae372025-76%1968
American RobinTurdidae362025+56%1968
American CrowCorvidae322025+32%1968
Double-crested CormorantPhalacrocoracidae252009n/an/a
Northern House WrenTroglodytidae232025+93%1968
Gray CatbirdMimidae192025+93%1968
Song SparrowPasserellidae172025-12%1968
Indigo BuntingCardinalidae172025+27%1968
Common YellowthroatParulidae172025+152%1968
Chipping SparrowPasserellidae162025+41%1968
Canada GooseAnatidae152023-22%2000
Mourning DoveColumbidae132025+70%1968
Brown-headed CowbirdIcteridae132025-46%1968
Northern CardinalCardinalidae132025-12%1968
Savannah SparrowPasserellidae122025+160%1968
Field SparrowPasserellidae102025-66%1968
Bank SwallowHirundinidae102025+207%1972
Eastern Wood-PeweeTyrannidae92025+109%1969
Red-headed WoodpeckerPicidae82025+0%1968
American GoldfinchFringillidae82025-74%1968
MallardAnatidae82011+43%1991
Horned LarkAlaudidae72023+20%1968
BobolinkIcteridae62023-67%1968
Eastern MeadowlarkIcteridae62025-77%1968
Western MeadowlarkIcteridae62001-87%1968
Eastern KingbirdTyrannidae52025+33%1968
Yellow WarblerParulidae52025+143%1968
Eastern BluebirdTurdidae52025-19%1968
KilldeerCharadriidae52025+113%1976
Blue JayCorvidae42025-60%1968
Cliff SwallowHirundinidae42021+114%1976
Yellow-billed CuckooCuculidae32023+50%1968
Baltimore OrioleIcteridae32024-50%1968
Rose-breasted GrosbeakCardinalidae32025-6%1968
DickcisselCardinalidae32025-90%1968
Warbling VireoVireonidae32025+0%1968
Tufted TitmouseParidae32025-25%1971

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