BirdAnalyst
BBS Route · Washington · BCR 10

Sullivan Lake 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 23 survey years, still active.

77Species 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 →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2000–2024Span
2Observers

Bird Species Found on Washington Sullivan Lake 2

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Sullivan Lake 2 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
Pine SiskinFringillidae612024+14%2002
Swainson's ThrushTurdidae602024+14%2002
Hammond's FlycatcherTyrannidae252024+33%2002
Golden-crowned KingletRegulidae242024+150%2002
American RobinTurdidae232024+67%2002
Chestnut-backed ChickadeeParidae222024+42%2016
Red-breasted NuthatchSittidae202024+13%2002
Townsend's WarblerParulidae182024-2%2002
Western TanagerCardinalidae152024+48%2002
Varied ThrushTurdidae142024+4%2002
Hermit ThrushTurdidae112024-51%2002
Chipping SparrowPasserellidae82024+41%2002
Nashville WarblerParulidae82024+30%2003
Pacific WrenTroglodytidae82024-8%2002
Warbling VireoVireonidae62024-44%2002
Yellow WarblerParulidae62023+250%2015
Tree SwallowHirundinidae62019+300%2017
Common RavenCorvidae42024+0%2002
Violet-green SwallowHirundinidae42019-32%2003
Pileated WoodpeckerPicidae42024+250%2005
Red CrossbillFringillidae42024+125%2008
Common MerganserAnatidae32023+167%2005
Cassin's VireoVireonidae32024-17%2002
MacGillivray's WarblerParulidae32024-43%2002
Barn SwallowHirundinidae32001n/an/a
Northern WaterthrushParulidae32023-22%2003
Mountain ChickadeeParidae32024-44%2004
Canada JayCorvidae22023+0%2002
Evening GrosbeakFringillidae22009+67%2001
Black-capped ChickadeeParidae22024-6%2002
Townsend's SolitaireTurdidae22018-43%2004
Hairy WoodpeckerPicidae22024+100%2013
Brown-headed CowbirdIcteridae22003+100%2001
Cliff SwallowHirundinidae22015-31%2009
Cedar WaxwingBombycillidae22024+0%2008
Ruffed GrousePhasianidae22023+0%2008
VeeryTurdidae22021+67%2013
Rufous HummingbirdTrochilidae22023+100%2008
Vaux's SwiftApodidae22010n/an/a
OspreyPandionidae12023-33%2005

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