BirdAnalyst
BBS Route · Wisconsin · BCR 12

Bayfield Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 153 species recorded across 58 survey years, still active.

153Species 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 →
1967–2025Span
2Observers

Bird Species Found on Wisconsin Bayfield

Top 40 of 153 species by most recent count. Each links to its species trend.

Species recorded on the Bayfield 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 BlackbirdIcteridae592025+249%1969
Red-eyed VireoVireonidae552025+203%1969
American RobinTurdidae492025+62%1969
OvenbirdParulidae422025+79%1969
Song SparrowPasserellidae402025+57%1969
Common YellowthroatParulidae392025+153%1969
Savannah SparrowPasserellidae342025-4%1969
Indigo BuntingCardinalidae332025+330%1969
Chestnut-sided WarblerParulidae332025+122%1969
American CrowCorvidae262025+86%1969
Black-and-white WarblerParulidae162025+825%1969
Mourning DoveColumbidae162025+725%1971
Blue JayCorvidae152025+92%1969
American RedstartParulidae152025+178%1969
American GoldfinchFringillidae142025+22%1969
White-throated SparrowPasserellidae142025+100%1969
Cedar WaxwingBombycillidae142025+193%1969
European StarlingSturnidae132025+29%1969
Mourning WarblerParulidae132025+330%1969
Red-breasted NuthatchSittidae132025+440%1969
Black-capped ChickadeeParidae132025+400%1969
Herring GullLaridae131999+260%1971
VeeryTurdidae122025-28%1969
Chipping SparrowPasserellidae112025+400%1969
Barn SwallowHirundinidae112025+26%1969
BobolinkIcteridae102025-43%1969
Yellow-bellied SapsuckerPicidae102025+47%1970
Nashville WarblerParulidae92025+300%1970
Tree SwallowHirundinidae82025-70%1969
Sedge WrenTroglodytidae82025-6%1969
Least FlycatcherTyrannidae72025-50%1969
Clay-colored SparrowPasserellidae72025+62%1969
Pine WarblerParulidae72025+500%1969
Gray CatbirdMimidae72025+43%1969
Yellow-billed CuckooCuculidae72023+0%1979
Pileated WoodpeckerPicidae62025+333%1981
Purple FinchFringillidae62025+56%1970
Cliff SwallowHirundinidae62025-90%1969
Golden-winged WarblerParulidae62025+80%1978
Yellow WarblerParulidae62025-50%1969

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