BirdAnalyst
BBS Route · Washington · BCR 5

Ilwaco Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 101 species recorded across 38 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 →
38Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1975–2025Span
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 RobinTurdidae642025-7%1977
Swainson's ThrushTurdidae592025-62%1977
American CrowCorvidae392025-65%1977
Eurasian Collared-DoveColumbidae262025+119%2015
Steller's JayCorvidae242025+194%1977
Chestnut-backed ChickadeeParidae242025-34%1977
Song SparrowPasserellidae232025-42%1977
Purple FinchFringillidae222025-17%1977
Western TanagerCardinalidae192025+180%1977
Great Blue HeronArdeidae162025+200%1977
Olive-sided FlycatcherTyrannidae162025-5%1977
Barn SwallowHirundinidae162025-14%1977
Violet-green SwallowHirundinidae142025-29%1977
Golden-crowned KingletRegulidae142025-76%1977
Cliff SwallowHirundinidae132025-29%1977
Cedar WaxwingBombycillidae132025-63%1977
Black-headed GrosbeakCardinalidae122025+343%1977
European StarlingSturnidae112025-35%1977
Band-tailed PigeonColumbidae102025+130%1977
Spotted TowheePasserellidae102025+383%1977
White-crowned SparrowPasserellidae92025+62%1977
Wilson's WarblerParulidae92025-75%1977
Bewick's WrenTroglodytidae92025-59%1977
Pacific WrenTroglodytidae92025-64%1977
Red CrossbillFringillidae92025-57%1979
Tree SwallowHirundinidae92025+18%1979
Orange-crowned WarblerParulidae82025-71%1977
Warbling VireoVireonidae82025+0%1978
Red-breasted NuthatchSittidae82025+183%1989
Red-winged BlackbirdIcteridae82025+400%1992
House FinchFringillidae72025+27%1977
Brown-headed CowbirdIcteridae62025-85%1977
American GoldfinchFringillidae62025-86%1977
Brown CreeperCerthiidae62025+120%2013
Black-capped ChickadeeParidae52025-61%1979
Rock PigeonColumbidae52018+143%1999
House SparrowPasseridae42025+0%1977
Pigeon GuillemotAlcidae41993n/an/a
California Scrub-JayCorvidae42022+50%2004

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