BirdAnalyst
BBS Route · Oregon · BCR 9

Three Forks Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 81 species recorded across 20 survey years, still active.

81Species 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 →
20Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2003–2025Span
3Observers

Bird Species Found on Oregon Three Forks

Top 40 of 81 species by most recent count. Each links to its species trend.

Species recorded on the Three Forks 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 LarkAlaudidae1362025+38%2005
Western MeadowlarkIcteridae1242025-10%2005
Brewer's SparrowPasserellidae312025+222%2005
Canada GooseAnatidae30202515×2011
Greater Sage-GrousePhasianidae252025+177%2018
Lark SparrowPasserellidae232025+318%2006
Rock WrenTroglodytidae172025+16%2005
Sage ThrasherMimidae142025+0%2005
Common NighthawkCaprimulgidae132025+0%2005
Common RavenCorvidae122025+18%2005
Vesper SparrowPasserellidae102025+64%2005
Eared GrebePodicipedidae102011n/an/a
Yellow-breasted ChatIcteriidae82021+175%2005
Loggerhead ShrikeLaniidae72025+180%2005
Brewer's BlackbirdIcteridae62025+89%2005
Burrowing OwlStrigidae62025+167%2017
Cliff SwallowHirundinidae52025-74%2006
SoraRallidae52011n/an/a
KilldeerCharadriidae42025-68%2005
Mourning DoveColumbidae42025-55%2005
California QuailOdontophoridae32021-33%2006
Western Wood-PeweeTyrannidae32004n/an/a
Yellow WarblerParulidae32021+125%2006
Sagebrush SparrowPasserellidae32025+60%2007
Long-billed CurlewScolopacidae32019+100%2011
Western KingbirdTyrannidae22025-67%2005
Say's PhoebeTyrannidae22025+50%2006
Brown-headed CowbirdIcteridae22025-20%2012
Northern Rough-winged SwallowHirundinidae22015-50%2006
GadwallAnatidae22024+60%2006
Northern PintailAnatidae22024-61%2006
American AvocetRecurvirostridae22016-43%2006
Lazuli BuntingCardinalidae22019+33%2007
WilletScolopacidae22021+0%2008
Swainson's HawkAccipitridae22005n/an/a
Savannah SparrowPasserellidae22016+0%2008
Prairie FalconFalconidae22024-69%2008
House FinchFringillidae22025-25%2007
Spotted TowheePasserellidae22006n/an/a
Barn SwallowHirundinidae22006n/an/a

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