BirdAnalyst
BBS Route · Idaho · BCR 10

Cobalt Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 79 species recorded across 27 survey years, still active.

79Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1989–2025Span
6Observers

Bird Species Found on Idaho Cobalt

Top 40 of 79 species by most recent count. Each links to its species trend.

Species recorded on the Cobalt 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
Western TanagerCardinalidae472025+386%1991
Pine SiskinFringillidae362025+163%1991
American RobinTurdidae342025-3%1991
Ruby-crowned KingletRegulidae312025+64%1991
Warbling VireoVireonidae302025+2%1991
Chipping SparrowPasserellidae222025+121%1991
Hammond's FlycatcherTyrannidae192025+725%2003
Lazuli BuntingCardinalidae172025-31%1991
Yellow WarblerParulidae142025+129%1991
Clark's NutcrackerCorvidae112025-42%1991
Song SparrowPasserellidae92025+275%1991
MacGillivray's WarblerParulidae92025-13%1991
Mountain ChickadeeParidae92025+29%1991
Hermit ThrushTurdidae92025-56%1991
Red-breasted NuthatchSittidae82025+36%1992
MallardAnatidae72006n/an/a
Rock WrenTroglodytidae62025+400%1991
Evening GrosbeakFringillidae52025-65%1991
Violet-green SwallowHirundinidae52025+69%1995
Brewer's SparrowPasserellidae52025+120%1995
Common RavenCorvidae52025+71%2002
Townsend's SolitaireTurdidae42012+11%1996
Swainson's ThrushTurdidae42025+62%2000
Ruffed GrousePhasianidae42024+300%2013
Dusky FlycatcherTyrannidae32025+33%1991
Willow FlycatcherTyrannidae32024+200%1991
Orange-crowned WarblerParulidae32013+83%2000
Black-headed GrosbeakCardinalidae32025+67%2007
Hairy WoodpeckerPicidae22025-20%2001
Red-naped SapsuckerPicidae22025-33%1996
Cedar WaxwingBombycillidae22025-22%2003
Spotted TowheePasserellidae22025+50%2002
American DipperCinclidae22013+100%2009
Lincoln's SparrowPasserellidae22024n/an/a
Nashville WarblerParulidae22025+100%2024
American GoshawkAccipitridae11989n/an/a
Common NighthawkCaprimulgidae12025+0%1992
Rufous HummingbirdTrochilidae11992-50%1989
Olive-sided FlycatcherTyrannidae12025-33%1990
Vesper SparrowPasserellidae12025+50%1991

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