BirdAnalyst
BBS Route · Oregon · BCR 9

Crooked Riv. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 79 species recorded across 15 survey years, still active.

79Species 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 →
15Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
3Observers

Bird Species Found on Oregon Crooked Riv.

Top 40 of 79 species by most recent count. Each links to its species trend.

Species recorded on the Crooked Riv. 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
Western MeadowlarkIcteridae782025+35%1996
Brewer's SparrowPasserellidae442025-37%1996
Cliff SwallowHirundinidae302021+171%1999
Mourning DoveColumbidae242025+388%1999
Horned LarkAlaudidae222025-66%1996
Sagebrush SparrowPasserellidae192025+59%1996
Gray FlycatcherTyrannidae182025-15%1996
Brewer's BlackbirdIcteridae172025-64%1996
Vesper SparrowPasserellidae142025-39%1996
Sage ThrasherMimidae122025-84%1996
Pinyon JayCorvidae122022n/an/a
Common RavenCorvidae102025+77%1996
Mountain BluebirdTurdidae102025-46%1996
Eurasian Collared-DoveColumbidae92025n/an/a
Common NighthawkCaprimulgidae62025+500%1996
Northern Rough-winged SwallowHirundinidae62017+100%1996
Rock WrenTroglodytidae52025-55%1996
California QuailOdontophoridae52005+0%1999
Ash-throated FlycatcherTyrannidae52025+25%2005
KilldeerCharadriidae42025+133%1996
American KestrelFalconidae42025+0%1996
Black-billed MagpieCorvidae42025-64%1997
American RobinTurdidae42025-38%1999
ChukarPhasianidae42025+100%1997
Wilson's SnipeScolopacidae32024-11%1999
Yellow-headed BlackbirdIcteridae32005-50%1997
Red-winged BlackbirdIcteridae32025-76%1999
House SparrowPasseridae32002+50%1996
Green-tailed TowheePasserellidae31997n/an/a
Mountain QuailOdontophoridae32025n/an/a
Chipping SparrowPasserellidae22025+33%2005
European StarlingSturnidae22025-50%1997
Cassin's FinchFringillidae22024-65%2004
Turkey VultureCathartidae22002+100%1996
Brown-headed CowbirdIcteridae22025-65%1999
Sandhill CraneGruidae22025-29%2002
Blue-winged TealAnatidae22002n/an/a
Northern House WrenTroglodytidae22002n/an/a
House FinchFringillidae22025+100%2005
Western BluebirdTurdidae22024n/an/a

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