BirdAnalyst
BBS Route · Oregon · BCR 9

Sisters Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 106 species recorded across 26 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1997–2025Span
2Observers

Bird Species Found on Oregon Sisters

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

Species recorded on the Sisters 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 CrossbillFringillidae722025+111%1999
Chipping SparrowPasserellidae382025-15%1999
Mountain ChickadeeParidae352025-5%1999
American RobinTurdidae272025-29%1999
Dusky FlycatcherTyrannidae262025+167%1999
Common RavenCorvidae202025+214%2000
Western TanagerCardinalidae192025+19%1999
Gray FlycatcherTyrannidae182025+75%1999
Pine SiskinFringillidae152025+0%1999
Pygmy NuthatchSittidae152025+92%1999
Olive-sided FlycatcherTyrannidae142025+100%1999
Western Wood-PeweeTyrannidae122025+27%1999
Fox SparrowPasserellidae112025+7%1999
White-breasted NuthatchSittidae112025+340%1999
Common MerganserAnatidae112025+83%2016
Common NighthawkCaprimulgidae102025+144%2001
Red-breasted NuthatchSittidae102025+25%1999
Turkey VultureCathartidae102013+386%2007
Northern House WrenTroglodytidae92025-3%1999
Mourning DoveColumbidae82025+100%2001
Townsend's SolitaireTurdidae82025+400%2004
Spotted TowheePasserellidae62025-40%1999
Green-tailed TowheePasserellidae62025-33%1999
Golden-crowned KingletRegulidae62024+67%2003
MacGillivray's WarblerParulidae52025+140%2004
Cassin's FinchFringillidae52025+8%2001
House FinchFringillidae52025+120%2001
Western BluebirdTurdidae52025+29%2002
American GoldfinchFringillidae52019+0%2008
Lewis's WoodpeckerPicidae52022+400%2021
Hammond's FlycatcherTyrannidae42025-47%1999
Brown-headed CowbirdIcteridae42025-44%1999
Williamson's SapsuckerPicidae42025+89%2000
Hairy WoodpeckerPicidae32025+60%2001
Red-winged BlackbirdIcteridae32024+67%2008
Cooper's HawkAccipitridae32025+100%2002
Barrow's GoldeneyeAnatidae32009n/an/a
Canada JayCorvidae32022n/an/a
Lesser GoldfinchFringillidae32025+200%2023
California QuailOdontophoridae22024+0%1999

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