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BBS Route · Oregon · BCR 9

Eightmile Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 27 survey years, still active.

92Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2025Span
5Observers

Bird Species Found on Oregon Eightmile

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Eightmile 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 MeadowlarkIcteridae572025-29%1985
Horned LarkAlaudidae422025-9%1985
Mourning DoveColumbidae272025+4%1985
Vesper SparrowPasserellidae152025-64%1985
Brewer's BlackbirdIcteridae112025-69%1985
Common RavenCorvidae102025+300%1985
House SparrowPasseridae102025+13%1985
Red-winged BlackbirdIcteridae92025-6%1985
Western BluebirdTurdidae91991n/an/a
ChukarPhasianidae82025+367%1985
Cliff SwallowHirundinidae72025-83%1985
Rock WrenTroglodytidae72025-21%1985
Lazuli BuntingCardinalidae62025+91%1987
Black-capped ChickadeeParidae61992+0%1991
Dusky FlycatcherTyrannidae62022+100%1999
Eurasian Collared-DoveColumbidae62025-50%2022
American GoldfinchFringillidae52025-18%1986
Northern House WrenTroglodytidae52024+67%1985
Brown-headed CowbirdIcteridae52024-5%1988
Savannah SparrowPasserellidae52025-68%1992
Ring-necked PheasantPhasianidae42025-75%1985
Say's PhoebeTyrannidae42025-46%1985
American CrowCorvidae42021-33%1985
Barn SwallowHirundinidae42022-40%1985
American RobinTurdidae42025-84%1985
Song SparrowPasserellidae42025+50%1986
House FinchFringillidae42025-33%1988
Common NighthawkCaprimulgidae32025-10%1988
Western KingbirdTyrannidae32025-38%1985
Bullock's OrioleIcteridae32025-53%1985
Lark SparrowPasserellidae32025-13%1992
Spotted TowheePasserellidae32025+300%1985
Wilson's SnipeScolopacidae32025+0%1986
Mountain BluebirdTurdidae32025+50%1991
California QuailOdontophoridae22025-50%1985
Northern HarrierAccipitridae22024-29%1985
Red-tailed HawkAccipitridae22023-69%1985
European StarlingSturnidae22025-48%1985
Cassin's FinchFringillidae22022-20%1987
Northern Rough-winged SwallowHirundinidae21987-17%1984

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