BirdAnalyst
BBS Route · Wisconsin · BCR 23

Hazel Green Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 105 species recorded across 52 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 →
52Years 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
9Observers

Bird Species Found on Wisconsin Hazel Green

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

Species recorded on the Hazel Green 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 BlackbirdIcteridae2952025-30%1969
American RobinTurdidae1092025+130%1969
Mourning DoveColumbidae522025+50%1969
European StarlingSturnidae522025-68%1969
Song SparrowPasserellidae502025+71%1969
Common GrackleIcteridae422025-79%1969
House SparrowPasseridae402025-72%1969
Barn SwallowHirundinidae372025+98%1969
Gray CatbirdMimidae342025+49%1969
Northern House WrenTroglodytidae342025+2%1969
DickcisselCardinalidae312025-71%1969
Brown-headed CowbirdIcteridae292025-23%1969
Cliff SwallowHirundinidae262025+718%1976
Northern CardinalCardinalidae222025+78%1969
American CrowCorvidae212025+10%1969
Eastern MeadowlarkIcteridae202025-58%1969
KilldeerCharadriidae202025+483%1970
American GoldfinchFringillidae182025-26%1969
Baltimore OrioleIcteridae172025+364%1969
Warbling VireoVireonidae132025+400%1970
Red-bellied WoodpeckerPicidae122025+517%1978
Indigo BuntingCardinalidae122025+300%1970
Eastern KingbirdTyrannidae122025+173%1971
Horned LarkAlaudidae112025-50%1969
Common YellowthroatParulidae112025-61%1969
Red-headed WoodpeckerPicidae92025-33%1969
Blue JayCorvidae82025-42%1969
Northern Rough-winged SwallowHirundinidae72018+229%1970
Rock PigeonColumbidae62025-84%1969
Brown ThrasherMimidae62025-68%1969
Eurasian Collared-DoveColumbidae62025+0%2022
Tufted TitmouseParidae52006+80%1973
Turkey VultureCathartidae52025+100%2013
Eastern Wood-PeweeTyrannidae42025+220%1969
BobolinkIcteridae42024-89%1969
Rose-breasted GrosbeakCardinalidae42025+64%1969
White-breasted NuthatchSittidae42025+100%1972
Ring-necked PheasantPhasianidae42025+40%1970
Yellow WarblerParulidae42025+75%1987
House FinchFringillidae42025+100%2005

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