BirdAnalyst
BBS Route · Washington · BCR 10

Sullivan Lake 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 24 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2000–2025Span
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
Swainson's ThrushTurdidae462025+9%2002
Pine SiskinFringillidae342025+21%2002
American RobinTurdidae312025+74%2002
Hammond's FlycatcherTyrannidae242025+39%2002
Townsend's WarblerParulidae212025+9%2002
Red-breasted NuthatchSittidae212025+19%2002
Golden-crowned KingletRegulidae172025+117%2002
Red CrossbillFringillidae132025+225%2008
Western TanagerCardinalidae112025+57%2002
Warbling VireoVireonidae112025-51%2002
Varied ThrushTurdidae112025+22%2002
Cedar WaxwingBombycillidae112025+129%2008
Nashville WarblerParulidae102025+44%2003
Common RavenCorvidae82025+11%2002
Chipping SparrowPasserellidae82025+24%2002
Chestnut-backed ChickadeeParidae82025+74%2016
Pacific WrenTroglodytidae72025-42%2002
Hermit ThrushTurdidae62025-51%2002
Tree SwallowHirundinidae62019+300%2017
Cassin's VireoVireonidae52025-8%2002
Violet-green SwallowHirundinidae42019-32%2003
Orange-crowned WarblerParulidae42025-75%2002
Pileated WoodpeckerPicidae42024+250%2005
Common MerganserAnatidae32023+167%2005
Brown CreeperCerthiidae32025-29%2002
Hairy WoodpeckerPicidae32025+133%2021
Barn SwallowHirundinidae32001n/an/a
Northern WaterthrushParulidae32023-22%2003
Canada JayCorvidae22023+0%2002
Evening GrosbeakFringillidae22009+67%2001
Yellow WarblerParulidae22025+300%2015
MacGillivray's WarblerParulidae22025-69%2002
Black-capped ChickadeeParidae22024-6%2002
Townsend's SolitaireTurdidae22018-43%2004
Brown-headed CowbirdIcteridae22003+100%2001
Cliff SwallowHirundinidae22015-31%2009
Mountain ChickadeeParidae22025-44%2004
Steller's JayCorvidae22025-33%2004
Ruffed GrousePhasianidae22023+0%2008
VeeryTurdidae22021+67%2013

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