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BBS Route · Alaska · BCR 3

Dietrich Cmp Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 66 species recorded across 32 survey years, still active.

66Species 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 →
32Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2025Span
6Observers

Bird Species Found on Alaska Dietrich Cmp

Top 40 of 66 species by most recent count. Each links to its species trend.

Species recorded on the Dietrich Cmp 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-crowned SparrowPasserellidae782025+146%1995
American RobinTurdidae442025-9%1995
Swainson's ThrushTurdidae342025+980%1995
Varied ThrushTurdidae152025+86%1995
Orange-crowned WarblerParulidae142025+0%1997
Savannah SparrowPasserellidae92025-19%1997
Lesser ScaupAnatidae82000+700%1993
American WigeonAnatidae72025+333%1998
Wilson's WarblerParulidae72025+23%1998
Canada JayCorvidae62025+5%1995
Arctic WarblerPhylloscopidae62014+33%2003
Fox SparrowPasserellidae62025+71%1996
Lincoln's SparrowPasserellidae62024+225%1999
Gray-cheeked ThrushTurdidae62025-33%1998
Boreal ChickadeeParidae42025-35%1998
Wilson's SnipeScolopacidae32012+100%2003
Blackpoll WarblerParulidae32021+0%2005
Ruby-crowned KingletRegulidae32025-11%1997
Upland SandpiperScolopacidae32011n/an/a
Northern ShrikeLaniidae32021n/an/a
Canada GooseAnatidae21993n/an/a
MallardAnatidae22023+100%1994
Spotted SandpiperScolopacidae22015+100%1994
American KestrelFalconidae22024+0%1998
Violet-green SwallowHirundinidae21999+100%1998
Common LoonGaviidae22024+100%2003
White-winged ScoterAnatidae22006n/an/a
Tundra SwanAnatidae22018-33%2012
Hermit ThrushTurdidae22025+0%2013
Bank SwallowHirundinidae22021n/an/a
Bohemian WaxwingBombycillidae22024+0%2023
Short-billed GullLaridae12023-64%1995
Lesser YellowlegsScolopacidae12025-57%1995
American GoshawkAccipitridae11993n/an/a
Olive-sided FlycatcherTyrannidae12024+67%1995
Alder FlycatcherTyrannidae12024+67%2011
Common RavenCorvidae12024-14%1998
Townsend's WarblerParulidae12019+0%2007
Horned GrebePodicipedidae12025-50%1994
Greater ScaupAnatidae12013-70%1996

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