BirdAnalyst
BBS Route · Wisconsin · BCR 23

Colby Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 23 survey years, still active.

106Species 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
4Observers

Bird Species Found on Wisconsin Colby

Top 40 of 106 species by most recent count. Each links to its species trend.

Species recorded on the Colby 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 BlackbirdIcteridae852024-59%2000
American RobinTurdidae332024-52%2000
Rock PigeonColumbidae292024-72%2000
Common GrackleIcteridae222024-81%2000
DickcisselCardinalidae162023+282%2012
KilldeerCharadriidae152024+83%2000
Common YellowthroatParulidae152024-14%2000
Mourning DoveColumbidae142024-19%2000
Savannah SparrowPasserellidae132024-75%2000
Cliff SwallowHirundinidae112023-27%2000
House SparrowPasseridae112024-47%2000
BobolinkIcteridae92024-26%2000
Chipping SparrowPasserellidae92024-40%2000
Song SparrowPasserellidae92024-62%2000
American GoldfinchFringillidae82024+27%2000
Barn SwallowHirundinidae82024-44%2000
Horned LarkAlaudidae72024-6%2000
European StarlingSturnidae72024-84%2000
Yellow WarblerParulidae72024-49%2000
Canada GooseAnatidae62014-78%2002
Eastern MeadowlarkIcteridae62024-67%2000
Tree SwallowHirundinidae62024+0%2000
Double-crested CormorantPhalacrocoracidae62003n/an/a
Northern House WrenTroglodytidae52024+0%2000
American CrowCorvidae42024-71%2000
Baltimore OrioleIcteridae42024-12%2000
Indigo BuntingCardinalidae42024+600%2000
Eastern Wood-PeweeTyrannidae42024+140%2001
Bank SwallowHirundinidae42022-34%2003
Brown-headed CowbirdIcteridae32024-58%2000
White-breasted NuthatchSittidae32017+100%2002
Sandhill CraneGruidae32023+67%2002
Wild TurkeyPhasianidae32023-54%2004
Downy WoodpeckerPicidae32023+100%2013
Ring-necked PheasantPhasianidae22024+17%2000
Blue JayCorvidae22023-38%2000
Brewer's BlackbirdIcteridae22017-63%2000
Clay-colored SparrowPasserellidae22018+0%2000
Rose-breasted GrosbeakCardinalidae22024-74%2000
Red-eyed VireoVireonidae22024-72%2000

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