BirdAnalyst
BBS Route · Oregon · BCR 9

Princeton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 13 survey years, no longer active.

96Species 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 →
13Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–1985Span
8Observers

Bird Species Found on Oregon Princeton

Top 40 of 96 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
Brewer's SparrowPasserellidae1441985-1%1974
Brewer's BlackbirdIcteridae1421985+32%1974
Cliff SwallowHirundinidae1031985-40%1974
Western MeadowlarkIcteridae921985-12%1974
Common RavenCorvidae831985+222%1974
Sage ThrasherMimidae821985-18%1974
Yellow-headed BlackbirdIcteridae781985+9%1974
Red-winged BlackbirdIcteridae701985-32%1974
Vesper SparrowPasserellidae451985+515%1981
Ring-billed GullLaridae43198512×1979
European StarlingSturnidae351985+330%1974
Savannah SparrowPasserellidae351985+290%1978
Horned LarkAlaudidae331985-5%1974
Barn SwallowHirundinidae271985-3%1974
California GullLaridae251985+456%1979
Mourning DoveColumbidae171985-52%1974
Brown-headed CowbirdIcteridae161985+44%1976
American WigeonAnatidae151981+150%1972
Cinnamon TealAnatidae141985+44%1974
Franklin's GullLaridae131985-81%1977
Wilson's PhalaropeScolopacidae121985-42%1974
Forster's TernLaridae111985-8%1974
Long-billed CurlewScolopacidae111985-58%1974
American White PelicanPelecanidae111985-22%1979
MallardAnatidae101985+277%1974
Song SparrowPasserellidae101985+10%1983
CanvasbackAnatidae101984-75%1981
House SparrowPasseridae91985-50%1977
Rock WrenTroglodytidae91985+260%1977
Marsh WrenTroglodytidae91985-24%1981
Ruddy DuckAnatidae91983+5%1979
Wilson's SnipeScolopacidae81985-73%1974
Double-crested CormorantPhalacrocoracidae81985+130%1981
Canada GooseAnatidae81985-57%1981
Lesser ScaupAnatidae71975+600%1972
Lark SparrowPasserellidae71985+88%1974
WilletScolopacidae61984+55%1974
Ring-necked PheasantPhasianidae61985-44%1974
Northern HarrierAccipitridae61985-8%1974
GadwallAnatidae51985+3%1975

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