BirdAnalyst
BBS Route · Oregon · BCR 9

Crowley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 56 species recorded across 19 survey years, still active.

56Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1983–2025Span
7Observers

Bird Species Found on Oregon Crowley

Top 40 of 56 species by most recent count. Each links to its species trend.

Species recorded on the Crowley 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 LarkAlaudidae1272025-61%1985
Western MeadowlarkIcteridae1032025-61%1985
Brewer's SparrowPasserellidae602025-76%1985
Sage ThrasherMimidae352025-67%1985
House SparrowPasseridae272003n/an/a
Mourning DoveColumbidae212025+21%1985
Brewer's BlackbirdIcteridae172025+0%1985
Lark SparrowPasserellidae142025+214%1987
Cliff SwallowHirundinidae122025-53%1989
European StarlingSturnidae112025+286%1985
Red-winged BlackbirdIcteridae112025+338%1985
Vesper SparrowPasserellidae82025-41%1985
Common NighthawkCaprimulgidae62025-43%1985
Common RavenCorvidae62025-37%1985
ChukarPhasianidae52025+400%2006
Gray FlycatcherTyrannidae52025-22%1985
Ferruginous HawkAccipitridae42025+0%1990
Bullock's OrioleIcteridae31985+200%1983
Northern HarrierAccipitridae32025+40%1987
Greater Sage-GrousePhasianidae32007-73%1988
KilldeerCharadriidae22025+33%1985
American KestrelFalconidae22025+50%1985
Black-billed MagpieCorvidae22004-14%1985
Brown-headed CowbirdIcteridae22025-83%1985
Grasshopper SparrowPasserellidae22006+100%1983
Sagebrush SparrowPasserellidae22025-76%1985
Loggerhead ShrikeLaniidae22025-44%1987
American RobinTurdidae22006+80%1988
Red-tailed HawkAccipitridae22024+40%1987
Common PoorwillCaprimulgidae22022+0%1984
Say's PhoebeTyrannidae22024+0%1989
Black-throated SparrowPasserellidae21994n/an/a
Bank SwallowHirundinidae22007n/an/a
Song SparrowPasserellidae22010n/an/a
MallardAnatidae22025n/an/a
Golden EagleAccipitridae11993-67%1988
Western KingbirdTyrannidae12024-40%2005
Barn SwallowHirundinidae11994-50%1983
Northern Rough-winged SwallowHirundinidae12004+0%1984
Rock WrenTroglodytidae12025-73%1985

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