BirdAnalyst
BBS Route · Minnesota · BCR 23

Princeton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 139 species recorded across 55 survey years, still active.

139Species 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 →
55Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1969–2024Span
4Observers

Bird Species Found on Minnesota Princeton

Top 40 of 139 species by most recent count. Each links to its species trend.

Species recorded on the Princeton 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 BlackbirdIcteridae742024-43%1971
Canada GooseAnatidae722023+114%1989
Common YellowthroatParulidae352024+88%1971
Ring-necked PheasantPhasianidae342024+889%1971
Mourning DoveColumbidae332024-44%1971
American RobinTurdidae252024-9%1971
Brown-headed CowbirdIcteridae182024+68%1971
Northern House WrenTroglodytidae162024+59%1971
Blue JayCorvidae142024+23%1971
Sedge WrenTroglodytidae142024+62%1971
American CrowCorvidae122024+2%1971
Eastern Wood-PeweeTyrannidae112024+213%1971
Yellow WarblerParulidae112024+94%1971
Sandhill CraneGruidae112024+700%2004
KilldeerCharadriidae102024-38%1971
Great Crested FlycatcherTyrannidae82024+230%1971
American GoldfinchFringillidae82024-55%1971
Barn SwallowHirundinidae82024-59%1971
Horned LarkAlaudidae72024+138%1971
Indigo BuntingCardinalidae62024+220%1972
Northern CardinalCardinalidae62024+475%1978
Wild TurkeyPhasianidae62024+925%2004
Double-crested CormorantPhalacrocoracidae62013+500%2003
Vesper SparrowPasserellidae52024-63%1971
Chipping SparrowPasserellidae52024-27%1971
Song SparrowPasserellidae52024-54%1971
Rose-breasted GrosbeakCardinalidae52024+21%1971
Tree SwallowHirundinidae52024-26%1972
Ruddy DuckAnatidae52013n/an/a
Baltimore OrioleIcteridae42024-65%1971
Common GrackleIcteridae42024-88%1971
Savannah SparrowPasserellidae42024-55%1971
Clay-colored SparrowPasserellidae42024-55%1971
Brown ThrasherMimidae42024-59%1971
Great Blue HeronArdeidae42024-57%1972
Purple MartinHirundinidae42023+56%1975
American RedstartParulidae42024+333%1985
Black-capped ChickadeeParidae42024+150%1975
DickcisselCardinalidae42023+60%1983
Wood ThrushTurdidae42024+400%1985

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