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BBS Route · Alaska · BCR 2

Gweek River Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 73 species recorded across 9 survey years, no longer active.

73Species 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 →
9Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2002Span
1Observers

Bird Species Found on Alaska Gweek River

Top 40 of 73 species by most recent count. Each links to its species trend.

Species recorded on the Gweek River 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
Northern WaterthrushParulidae1292002+21%1996
Gray-cheeked ThrushTurdidae1042002+31%1996
Fox SparrowPasserellidae782002+100%1996
Wilson's WarblerParulidae472002+100%1996
Orange-crowned WarblerParulidae452002+28%1996
Blackpoll WarblerParulidae442002-11%1996
American Tree SparrowPasserellidae372002+5%1996
Bank SwallowHirundinidae322002+5%1996
Yellow WarblerParulidae282002-3%1996
Alder FlycatcherTyrannidae272002+17%1996
Wilson's SnipeScolopacidae232002+24%1996
Canada JayCorvidae212002+239%1996
Varied ThrushTurdidae192002+37%1996
American RobinTurdidae162002+65%1996
Tree SwallowHirundinidae152002-15%1996
Sandhill CraneGruidae142002+24%1998
American WigeonAnatidae122002-24%1996
Lesser YellowlegsScolopacidae72002+35%1997
Green-winged TealAnatidae62002+0%1996
Common GoldeneyeAnatidae62002-33%1996
Solitary SandpiperScolopacidae62002-41%1996
Savannah SparrowPasserellidae42001+83%1997
MallardAnatidae42002+75%1997
Short-billed DowitcherScolopacidae42002-7%1998
Northern PintailAnatidae42002+0%1998
Pine GrosbeakFringillidae42002-13%2000
Black ScoterAnatidae42000n/an/a
Long-tailed JaegerStercorariidae31997+200%1994
Hudsonian GodwitScolopacidae32001+100%1995
Olive-sided FlycatcherTyrannidae32002+11%1997
White-crowned SparrowPasserellidae32002-33%1996
Swainson's ThrushTurdidae32002+150%1997
Arctic WarblerPhylloscopidae32001+50%2000
Red-necked GrebePodicipedidae22001+50%1996
Greater ScaupAnatidae22001-27%1996
Least SandpiperScolopacidae22002-53%1996
Common RavenCorvidae22002+0%1996
Rusty BlackbirdIcteridae22002-57%1996
Lincoln's SparrowPasserellidae22001+25%1998
Glaucous GullLaridae22002-56%1997

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