BirdAnalyst
BBS Route · Washington · BCR 9

Sulphur Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 46 species recorded across 27 survey years, still active.

46Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2022Span
1Observers

Bird Species Found on Washington Sulphur

Top 40 of 46 species by most recent count. Each links to its species trend.

Species recorded on the Sulphur 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
Horned LarkAlaudidae822022-29%1997
Western MeadowlarkIcteridae552022-49%1997
Canada GooseAnatidae39201439×1996
Yellow-headed BlackbirdIcteridae152016+50%2003
Barn SwallowHirundinidae112021+250%1997
Rock PigeonColumbidae82022+67%2001
Common RavenCorvidae82022+15%1997
Red-winged BlackbirdIcteridae82022+7%1997
Swainson's HawkAccipitridae52022-46%1997
Bullock's OrioleIcteridae52019+200%2016
Western KingbirdTyrannidae42022-46%1997
European StarlingSturnidae42022-50%1997
Mourning DoveColumbidae32022-73%1997
Grasshopper SparrowPasserellidae32022-85%1997
Short-eared OwlStrigidae32021-44%1998
Brewer's BlackbirdIcteridae32019+50%1998
Eastern KingbirdTyrannidae32015n/an/a
Eurasian Collared-DoveColumbidae32017+200%2016
California QuailOdontophoridae22021-33%1997
Ring-necked PheasantPhasianidae22022-70%1997
Northern HarrierAccipitridae22019-29%1999
Sage ThrasherMimidae21997+0%1995
Rock WrenTroglodytidae22021-69%1997
Bank SwallowHirundinidae22022-50%1998
Brewer's SparrowPasserellidae22014+0%2003
Common NighthawkCaprimulgidae22022-33%2012
Violet-green SwallowHirundinidae22014n/an/a
Red-tailed HawkAccipitridae12022+0%2002
American KestrelFalconidae12017-33%1996
Say's PhoebeTyrannidae12022-17%1997
Brown-headed CowbirdIcteridae12016-17%2000
Vesper SparrowPasserellidae12017-39%1997
Cliff SwallowHirundinidae12021-77%1997
Northern Rough-winged SwallowHirundinidae12018-40%1999
American RobinTurdidae12022+67%2006
California GullLaridae11996n/an/a
KilldeerCharadriidae12004+0%1996
Black-billed MagpieCorvidae12022+0%2002
Savannah SparrowPasserellidae12022-83%1998
Lark SparrowPasserellidae12013-75%1998

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