BirdAnalyst
BBS Route · Washington · BCR 9

Index Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 55 species recorded across 4 survey years, no longer active.

55Species 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 →
4Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–1971Span
2Observers

Bird Species Found on Washington Index

Top 40 of 55 species by most recent count. Each links to its species trend.

Species recorded on the Index 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 RobinTurdidae501971-10%1969
Swainson's ThrushTurdidae491971-10%1969
American CrowCorvidae241971-45%1969
Black SwiftApodidae20197122×1969
Black-throated Gray WarblerParulidae201971-29%1969
Willow FlycatcherTyrannidae181971-23%1969
Song SparrowPasserellidae161971+60%1969
Yellow WarblerParulidae161971+53%1969
Brown-headed CowbirdIcteridae121971+22%1969
Red-eyed VireoVireonidae101971-7%1969
Black-capped ChickadeeParidae101970+150%1968
Band-tailed PigeonColumbidae91971-58%1969
White-crowned SparrowPasserellidae81971-40%1969
Varied ThrushTurdidae81971-30%1969
Orange-crowned WarblerParulidae71971+360%1969
Pacific WrenTroglodytidae71971+36%1969
Barn SwallowHirundinidae61971-33%1969
Violet-green SwallowHirundinidae61971-20%1969
Chestnut-backed ChickadeeParidae61971+20%1969
Vaux's SwiftApodidae51971+67%1968
MacGillivray's WarblerParulidae51971-82%1969
BushtitAegithalidae51970+150%1968
Rufous HummingbirdTrochilidae41971+33%1968
Cliff SwallowHirundinidae41971+100%1968
Western TanagerCardinalidae41971+300%1969
Brewer's BlackbirdIcteridae41971n/an/a
American GoldfinchFringillidae31969+50%1968
Spotted TowheePasserellidae31971+50%1968
Cedar WaxwingBombycillidae31971-89%1969
Hammond's FlycatcherTyrannidae31971-67%1969
Tree SwallowHirundinidae31971-25%1969
Spotted SandpiperScolopacidae21968n/an/a
Rock PigeonColumbidae21969+100%1968
Olive-sided FlycatcherTyrannidae21970+100%1968
European StarlingSturnidae21971-63%1969
Northern Rough-winged SwallowHirundinidae21971-50%1968
Cassin's VireoVireonidae21971-86%1968
Wilson's WarblerParulidae21971-75%1968
Black-headed GrosbeakCardinalidae21971-50%1969
Townsend's WarblerParulidae21971-60%1969

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