BirdAnalyst
BBS Route · Wisconsin · BCR 23

Gresham Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 129 species recorded across 23 survey years, still active.

129Species 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 →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2024Span
5Observers

Bird Species Found on Wisconsin Gresham

Top 40 of 129 species by most recent count. Each links to its species trend.

Species recorded on the Gresham 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 BlackbirdIcteridae742024+58%2000
American RobinTurdidae702024+57%2000
Red-eyed VireoVireonidae622024+88%2000
Rock PigeonColumbidae592024+71%2000
House SparrowPasseridae492024-11%2000
Barn SwallowHirundinidae452024+16%2000
European StarlingSturnidae432024-35%2000
Indigo BuntingCardinalidae422024+37%2000
Chipping SparrowPasserellidae372024+13%2000
American CrowCorvidae362024-48%2000
Song SparrowPasserellidae302024-40%2000
Wild TurkeyPhasianidae302024+725%2002
Mourning DoveColumbidae272024+40%2000
Sandhill CraneGruidae242024-3%2000
American GoldfinchFringillidae242024-22%2000
Northern House WrenTroglodytidae242024+47%2000
Eastern Wood-PeweeTyrannidae232024+373%2000
Least FlycatcherTyrannidae222024+182%2000
Common GrackleIcteridae212024+250%2000
Common YellowthroatParulidae212024+46%2000
Cliff SwallowHirundinidae202024+21%2000
American RedstartParulidae20202412×2000
Northern CardinalCardinalidae172024+72%2000
Cedar WaxwingBombycillidae162024+68%2000
KilldeerCharadriidae142024+10%2000
Blue JayCorvidae142024-16%2000
Gray CatbirdMimidae142024+93%2000
Baltimore OrioleIcteridae132024+100%2000
Brown-headed CowbirdIcteridae122024-5%2000
Rose-breasted GrosbeakCardinalidae122024+15%2000
Black-capped ChickadeeParidae112024+13%2000
Common RavenCorvidae102024+89%2000
Yellow WarblerParulidae102024+380%2000
Eastern BluebirdTurdidae92024+156%2000
Hairy WoodpeckerPicidae82024+8%2000
Chimney SwiftApodidae82024-42%2000
Eastern KingbirdTyrannidae82024+125%2001
Wood ThrushTurdidae82024+222%2000
Red-bellied WoodpeckerPicidae72024+143%2000
Great Crested FlycatcherTyrannidae72024+118%2000

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.