BirdAnalyst
BBS Route · Minnesota · BCR 23

Knapp Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 127 species recorded across 52 survey years, still active.

127Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
8Observers

Bird Species Found on Minnesota Knapp

Top 40 of 127 species by most recent count. Each links to its species trend.

Species recorded on the Knapp 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 BlackbirdIcteridae1182024+26%1969
Brown-headed CowbirdIcteridae472024+207%1969
Song SparrowPasserellidae452024+90%1969
American RobinTurdidae452024+47%1969
American CrowCorvidae422024+404%1969
Common YellowthroatParulidae422024+43%1969
MallardAnatidae412024+125%1969
Northern House WrenTroglodytidae392024+165%1969
Ring-necked PheasantPhasianidae372024+158%1969
Mourning DoveColumbidae342024-8%1969
Chipping SparrowPasserellidae332024+885%1969
Common GrackleIcteridae262024-67%1969
Yellow WarblerParulidae252024+343%1970
Northern CardinalCardinalidae23202417×1975
Black-capped ChickadeeParidae232024+833%1974
Cedar WaxwingBombycillidae182024+600%1983
Clay-colored SparrowPasserellidae172024+300%1969
Blue JayCorvidae162024+215%1969
House SparrowPasseridae162024-54%1969
Tree SwallowHirundinidae16202413×1973
Indigo BuntingCardinalidae152024+257%1969
American GoldfinchFringillidae142024+91%1969
Horned LarkAlaudidae132024+59%1969
Barn SwallowHirundinidae132024+70%1969
Eastern Wood-PeweeTyrannidae122024+600%1979
White-breasted NuthatchSittidae122024+500%1977
Ring-necked DuckAnatidae122007+214%1985
Great Crested FlycatcherTyrannidae102024+123%1969
European StarlingSturnidae102024-78%1969
Sedge WrenTroglodytidae102019+58%1969
Vesper SparrowPasserellidae92019-70%1969
Swamp SparrowPasserellidae82024+185%1969
Red-eyed VireoVireonidae82024+275%1978
Cliff SwallowHirundinidae82024+56%1993
Black TernLaridae72024-64%1969
Bank SwallowHirundinidae72019+18%1974
Gray CatbirdMimidae72024+109%1969
Brown ThrasherMimidae72019-12%1969
Rock PigeonColumbidae62024-32%1970
American RedstartParulidae62024+367%1987

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