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BBS Route · Oregon · BCR 10

Hash Rock Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 20 survey years, still active.

103Species 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 →
20Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1983–2025Span
4Observers

Bird Species Found on Oregon Hash Rock

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Hash Rock 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
Western TanagerCardinalidae462025+114%1988
Chipping SparrowPasserellidae302025-48%1988
American RobinTurdidae252025-52%1988
Hermit ThrushTurdidae212025+106%1988
Red-breasted NuthatchSittidae192025+0%1988
Townsend's WarblerParulidae162025+78%1988
Dusky FlycatcherTyrannidae152025+92%1988
Mountain ChickadeeParidae152025+13%1988
Red-winged BlackbirdIcteridae142025-59%1988
Cliff SwallowHirundinidae142005+213%1991
Black-billed MagpieCorvidae132025+94%1988
European StarlingSturnidae132025-67%1988
Cassin's FinchFringillidae132025+0%1988
Williamson's SapsuckerPicidae92025+175%1997
Steller's JayCorvidae92025+47%1988
Golden-crowned KingletRegulidae92025+50%1988
Ruby-crowned KingletRegulidae92025+93%1988
Song SparrowPasserellidae92025+180%1991
Cassin's VireoVireonidae92025+200%1992
Hairy WoodpeckerPicidae82025-14%1988
Brewer's BlackbirdIcteridae82025+70%1988
MacGillivray's WarblerParulidae82025+500%1994
Common RavenCorvidae82025+18%1992
Downy WoodpeckerPicidae72024+300%1992
Mountain BluebirdTurdidae62025+160%1989
Mountain QuailOdontophoridae62025+175%2022
Mourning DoveColumbidae52025+90%1988
Warbling VireoVireonidae52025+50%1988
Yellow WarblerParulidae52025+0%1988
Canada JayCorvidae42022-43%1999
Lazuli BuntingCardinalidae42025+67%1993
California QuailOdontophoridae32025+100%1989
Western Wood-PeweeTyrannidae32025-42%1988
Barn SwallowHirundinidae31999-64%1989
Northern Rough-winged SwallowHirundinidae31989-25%1983
Townsend's SolitaireTurdidae32025-25%1997
House SparrowPasseridae32024+200%1994
Black-capped ChickadeeParidae31987n/an/a
Common NighthawkCaprimulgidae32001+200%1997
American KestrelFalconidae22025+0%1992

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