BirdAnalyst
BBS Route · Oregon · BCR 9

Blizzard Gap Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 110 species recorded across 38 survey years, still active.

110Species 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 →
38Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1984–2025Span
7Observers

Bird Species Found on Oregon Blizzard Gap

Top 40 of 110 species by most recent count. Each links to its species trend.

Species recorded on the Blizzard Gap 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
White-faced IbisThreskiornithidae592025+128%1997
Western MeadowlarkIcteridae572025-27%1987
Cliff SwallowHirundinidae572025-5%1987
European StarlingSturnidae502024-22%1988
Brewer's SparrowPasserellidae472025-54%1987
Red-winged BlackbirdIcteridae352025-48%1988
Yellow-headed BlackbirdIcteridae322025+5%1987
Sage ThrasherMimidae302025-65%1987
Mourning DoveColumbidae252025+27%1987
Brewer's BlackbirdIcteridae202025-70%1987
Rock WrenTroglodytidae202025-41%1987
ChukarPhasianidae182025-11%1987
Black-throated SparrowPasserellidae182025+36%1987
Brown-headed CowbirdIcteridae172025+23%1988
Ring-billed GullLaridae172024-15%1988
American CootRallidae142025-28%1987
Sagebrush SparrowPasserellidae132025-46%1987
Vesper SparrowPasserellidae122025-52%1987
Black TernLaridae122005-12%2001
Cinnamon TealAnatidae102025-23%1987
Lesser ScaupAnatidae102017+11%1995
Ruddy DuckAnatidae92023-7%1998
Black-billed MagpieCorvidae72025+9%1987
Green-winged TealAnatidae72004+250%1985
Turkey VultureCathartidae62024+175%1987
Gray FlycatcherTyrannidae62025-30%1987
Horned LarkAlaudidae62025-74%1987
Pine SiskinFringillidae61984n/an/a
Barn SwallowHirundinidae62025-25%1987
Cedar WaxwingBombycillidae61998n/an/a
Lark SparrowPasserellidae52025-56%1988
Tree SwallowHirundinidae51990-59%1985
GadwallAnatidae42023+36%1988
Canada GooseAnatidae42022+292%1987
Common NighthawkCaprimulgidae42025-65%1988
Dusky FlycatcherTyrannidae41989+300%1984
Savannah SparrowPasserellidae42025-56%1989
American WigeonAnatidae41994-56%1985
Western GrebePodicipedidae42018+67%1993
Violet-green SwallowHirundinidae42025-22%1992

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