BirdAnalyst
BBS Route · Wisconsin · BCR 12

Chaffey Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 142 species recorded across 54 survey years, still active.

142Species 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 →
54Years 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 Chaffey

Top 40 of 142 species by most recent count. Each links to its species trend.

Species recorded on the Chaffey 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
American RobinTurdidae382025+36%1968
OvenbirdParulidae342025-20%1968
Red-eyed VireoVireonidae302025+144%1968
Common YellowthroatParulidae282025-42%1968
VeeryTurdidae252025-30%1968
American CrowCorvidae242025-30%1968
Song SparrowPasserellidae192025-48%1968
American GoldfinchFringillidae162025-63%1968
Red-winged BlackbirdIcteridae152025+14%1968
Black-and-white WarblerParulidae152025+188%1970
White-throated SparrowPasserellidae142025-72%1968
Chestnut-sided WarblerParulidae142025+27%1968
Black-capped ChickadeeParidae132025+157%1969
Savannah SparrowPasserellidae122025-57%1968
Blue JayCorvidae122025-59%1969
Black-billed CuckooCuculidae112022+160%1968
Nashville WarblerParulidae112025-72%1968
American RedstartParulidae112025+0%1968
Cliff SwallowHirundinidae102013-71%1968
Yellow WarblerParulidae102025+5%1968
Cedar WaxwingBombycillidae92025-58%1968
European StarlingSturnidae82025-57%1968
Indigo BuntingCardinalidae82025+17%1975
Least FlycatcherTyrannidae72025-76%1968
Brown-headed CowbirdIcteridae72025-78%1968
Black-throated Green WarblerParulidae72025+33%1970
Common GrackleIcteridae72025+275%1975
Ring-billed GullLaridae72016+100%1988
Eastern PhoebeTyrannidae62025+29%1970
Mourning WarblerParulidae62025-71%1968
Hermit ThrushTurdidae62025+100%1968
Red-breasted NuthatchSittidae62025+120%1972
Rock PigeonColumbidae62025+57%1991
Common RavenCorvidae52025+0%1969
Chipping SparrowPasserellidae52025-25%1968
Northern House WrenTroglodytidae52025-52%1968
Magnolia WarblerParulidae52025+167%1982
Hairy WoodpeckerPicidae42025+100%1968
Rose-breasted GrosbeakCardinalidae42025-59%1968
Wood ThrushTurdidae42025-7%1969

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