BirdAnalyst
BBS Route · Washington · BCR 5

Ilwaco Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 101 species recorded across 37 survey years, still active.

101Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1975–2024Span
5Observers

Bird Species Found on Washington Ilwaco

Top 40 of 101 species by most recent count. Each links to its species trend.

Species recorded on the Ilwaco 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
Brandt's CormorantPhalacrocoracidae802009+76%1999
American RobinTurdidae752024-4%1977
Swainson's ThrushTurdidae572024-69%1977
American CrowCorvidae412024-63%1977
Song SparrowPasserellidae292024-38%1977
European StarlingSturnidae242024-20%1977
Purple FinchFringillidae172024-14%1977
Warbling VireoVireonidae172024-3%1978
Tree SwallowHirundinidae172024-4%1979
Chestnut-backed ChickadeeParidae162024-60%1977
Pacific WrenTroglodytidae142024-71%1977
Eurasian Collared-DoveColumbidae132024+62%2015
Western TanagerCardinalidae122024+145%1977
Violet-green SwallowHirundinidae112024-41%1977
Steller's JayCorvidae102024+112%1977
Spotted TowheePasserellidae102024+333%1977
Red CrossbillFringillidae102024-71%1979
Black-headed GrosbeakCardinalidae92024+314%1977
Golden-crowned KingletRegulidae92024-78%1977
White-crowned SparrowPasserellidae82024+48%1977
Barn SwallowHirundinidae82024-25%1977
Great Blue HeronArdeidae72024+50%1977
Orange-crowned WarblerParulidae72024-78%1977
House SparrowPasseridae72024+0%1977
Olive-sided FlycatcherTyrannidae62024-32%1977
Cedar WaxwingBombycillidae62024-49%1977
Wilson's WarblerParulidae62024-77%1977
Brown-headed CowbirdIcteridae52024-77%1977
House FinchFringillidae52024+0%1977
American GoldfinchFringillidae52024-87%1977
Black-capped ChickadeeParidae52024-54%1979
Rock PigeonColumbidae52018+143%1999
Common RavenCorvidae52024+433%1993
Band-tailed PigeonColumbidae42024+280%1977
Brewer's BlackbirdIcteridae42024-33%1977
Red-breasted NuthatchSittidae42024+100%1989
Red-winged BlackbirdIcteridae42024+300%1992
BushtitAegithalidae42023-18%1991
Pigeon GuillemotAlcidae41993n/an/a
California Scrub-JayCorvidae42022+50%2004

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