BirdAnalyst
BBS Route · Oregon · BCR 5

Tualatin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 99 species recorded across 45 survey years, still active.

99Species 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 →
45Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
6Observers

Bird Species Found on Oregon Tualatin

Top 40 of 99 species by most recent count. Each links to its species trend.

Species recorded on the Tualatin 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
American CrowCorvidae982025+86%1970
American RobinTurdidae922025-45%1970
Song SparrowPasserellidae602025-9%1971
House FinchFringillidae452025-16%1970
Spotted TowheePasserellidae312025-47%1970
Lesser GoldfinchFringillidae27202528×1995
Violet-green SwallowHirundinidae182025-39%1970
Bewick's WrenTroglodytidae172025+443%1971
Red-breasted NuthatchSittidae152025+246%1986
California Scrub-JayCorvidae142025+4%1970
Black-capped ChickadeeParidae112025-36%1970
MallardAnatidae102025+7%1970
European StarlingSturnidae102025-21%1970
White-breasted NuthatchSittidae92025-46%1970
Cliff SwallowHirundinidae92025+104%1972
American GoldfinchFringillidae72025-68%1970
Canada GooseAnatidae62025+111%2012
Band-tailed PigeonColumbidae52024-82%1970
Brown-headed CowbirdIcteridae52025-89%1970
White-crowned SparrowPasserellidae52025-35%1970
Purple FinchFringillidae52025+175%1971
Red CrossbillFringillidae52025-67%2012
Steller's JayCorvidae42025-82%1970
Brewer's BlackbirdIcteridae42018-91%1970
Tree SwallowHirundinidae42006+70%1992
Vaux's SwiftApodidae42025+0%1975
Mourning DoveColumbidae32025-57%1970
Pine SiskinFringillidae32025-69%1973
Black-headed GrosbeakCardinalidae32025-76%1970
Cedar WaxwingBombycillidae32024-33%1971
House SparrowPasseridae32025-92%1970
Downy WoodpeckerPicidae32025+29%1973
Savannah SparrowPasserellidae32022+60%1972
Chestnut-backed ChickadeeParidae32025+117%1975
Common RavenCorvidae32025-50%2022
Northern BobwhiteOdontophoridae21968n/an/a
Ring-necked PheasantPhasianidae22001-90%1970
Western Wood-PeweeTyrannidae22025-71%1970
Pacific WrenTroglodytidae22022+67%1976
Rock PigeonColumbidae22025-58%1971

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