BirdAnalyst
BBS Route · Washington · BCR 9

Cascade Riv Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 67 species recorded across 18 survey years, no longer active.

67Species 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 →
18Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2006Span
1Observers

Bird Species Found on Washington Cascade Riv

Top 40 of 67 species by most recent count. Each links to its species trend.

Species recorded on the Cascade Riv 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 RobinTurdidae832006+63%1990
Pacific WrenTroglodytidae332006-35%1990
Swainson's ThrushTurdidae252006+19%1990
Varied ThrushTurdidae212006-52%1990
Western TanagerCardinalidae202006+650%1991
Townsend's WarblerParulidae102006-24%1990
MacGillivray's WarblerParulidae92006+325%1990
Warbling VireoVireonidae92006+125%1991
Red CrossbillFringillidae82000+500%1990
Steller's JayCorvidae62006-31%1990
Red-breasted SapsuckerPicidae52006+200%1990
Song SparrowPasserellidae52006+83%1990
Yellow WarblerParulidae52006-15%1991
Chestnut-backed ChickadeeParidae52006-39%1990
Golden-crowned KingletRegulidae52006-83%1990
Hammond's FlycatcherTyrannidae42006+29%1991
Willow FlycatcherTyrannidae42006+60%1993
Sooty GrousePhasianidae32006+33%1990
Spotted TowheePasserellidae32006+400%1992
Violet-green SwallowHirundinidae32006-67%1990
Common NighthawkCaprimulgidae32006+325%1991
Black-throated Gray WarblerParulidae32006-59%1991
Mourning DoveColumbidae31996n/an/a
Hairy WoodpeckerPicidae22006+40%1993
Vaux's SwiftApodidae22006-25%1990
Rufous HummingbirdTrochilidae22006-64%1990
Western Wood-PeweeTyrannidae22006+0%1991
American CrowCorvidae22006-78%1990
Purple FinchFringillidae22002+0%1989
Cedar WaxwingBombycillidae22005-50%1990
Olive-sided FlycatcherTyrannidae22006+20%1991
Common RavenCorvidae22006+233%1991
Evening GrosbeakFringillidae22004-50%1995
Black SwiftApodidae22003-55%1994
European StarlingSturnidae22002-60%1990
Black-headed GrosbeakCardinalidae22006+150%1995
Tree SwallowHirundinidae21996n/an/a
Brewer's BlackbirdIcteridae22002n/an/a
MallardAnatidae11988n/an/a
Nashville WarblerParulidae12002-60%1989

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