BirdAnalyst
BBS Route · Wisconsin · BCR 23

Gresham Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 131 species recorded across 24 survey years, still active.

131Species 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2025Span
5Observers

Bird Species Found on Wisconsin Gresham

Top 40 of 131 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 BlackbirdIcteridae1062025+84%2000
European StarlingSturnidae812025-13%2000
House SparrowPasseridae672025+37%2000
Red-eyed VireoVireonidae662025+111%2000
American RobinTurdidae652025+77%2000
Rock PigeonColumbidae572025+100%2000
Canada GooseAnatidae512025-16%2008
American CrowCorvidae482025-20%2000
Mourning DoveColumbidae462025+86%2000
Chipping SparrowPasserellidae452025+36%2000
Indigo BuntingCardinalidae382025+49%2000
Northern House WrenTroglodytidae352025+88%2000
Song SparrowPasserellidae312025-38%2000
Barn SwallowHirundinidae262025+39%2000
Common YellowthroatParulidae252025+48%2000
Northern CardinalCardinalidae222025+132%2000
American RedstartParulidae22202516×2000
Eastern Wood-PeweeTyrannidae212025+500%2000
American GoldfinchFringillidae212025+8%2000
Gray CatbirdMimidae212025+229%2000
Sandhill CraneGruidae192025+20%2000
Chimney SwiftApodidae192025-6%2000
Least FlycatcherTyrannidae192025+247%2000
Brown-headed CowbirdIcteridae182025+22%2000
Cliff SwallowHirundinidae182025+42%2000
Blue JayCorvidae172025+7%2000
Common GrackleIcteridae172025+307%2000
Baltimore OrioleIcteridae122025+119%2000
Cedar WaxwingBombycillidae102025+72%2000
OvenbirdParulidae102025-16%2000
Horned LarkAlaudidae92025+214%2000
Black-capped ChickadeeParidae92025+13%2000
KilldeerCharadriidae82025+23%2000
Red-bellied WoodpeckerPicidae82025+186%2000
Wood ThrushTurdidae82025+244%2000
Wild TurkeyPhasianidae82025+900%2002
Great Crested FlycatcherTyrannidae72025+146%2000
Eastern PhoebeTyrannidae72025-54%2000
Yellow WarblerParulidae72025+360%2000
Chestnut-sided WarblerParulidae72025+280%2002

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