BirdAnalyst
BBS Route · Alaska · BCR 4

Tangle Lakes Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 25 species recorded across 1 survey years, no longer active.

25Species 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 →
1Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1987–1987Span
1Observers

Bird Species Found on Alaska Tangle Lakes

Top 25 of 25 species by most recent count. Each links to its species trend.

Species recorded on the Tangle Lakes 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
Cliff SwallowHirundinidae851987n/an/a
White-crowned SparrowPasserellidae281987n/an/a
Bank SwallowHirundinidae231987n/an/a
Red-necked PhalaropeScolopacidae111987n/an/a
Short-billed GullLaridae101987n/an/a
Yellow WarblerParulidae101987n/an/a
Lincoln's SparrowPasserellidae91987n/an/a
Common RavenCorvidae81987n/an/a
Blue-winged TealAnatidae61987n/an/a
Bohemian WaxwingBombycillidae51987n/an/a
American PipitMotacillidae51987n/an/a
Arctic TernLaridae41987n/an/a
American WigeonAnatidae41987n/an/a
Say's PhoebeTyrannidae41987n/an/a
American Tree SparrowPasserellidae41987n/an/a
Tree SwallowHirundinidae41987n/an/a
Savannah SparrowPasserellidae31987n/an/a
Red-throated LoonGaviidae21987n/an/a
American Golden-PloverCharadriidae21987n/an/a
Semipalmated PloverCharadriidae21987n/an/a
BuffleheadAnatidae11987n/an/a
Orange-crowned WarblerParulidae11987n/an/a
Gray-cheeked ThrushTurdidae11987n/an/a
Hermit ThrushTurdidae11987n/an/a
Northern WheatearMuscicapidae11987n/an/a

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