BirdAnalyst
BBS Route · Utah · BCR 16

Vernal Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 14 survey years, no longer active.

103Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1999–2018Span
3Observers

Bird Species Found on Utah Vernal

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Vernal 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
American CootRallidae160201818×2006
MallardAnatidae942018+485%2004
Western MeadowlarkIcteridae552018+24%2004
Vesper SparrowPasserellidae442018+42%2004
Eared GrebePodicipedidae402018+54%2004
Brewer's SparrowPasserellidae352018+116%2005
Horned LarkAlaudidae322018+81%2004
GadwallAnatidae312016-2%2004
Black-throated SparrowPasserellidae191999n/an/a
Sage ThrasherMimidae172018+344%2004
Lark SparrowPasserellidae162018+69%2004
Mountain BluebirdTurdidae152016+800%2004
American WigeonAnatidae142012-23%2004
Clark's NutcrackerCorvidae11201611×2003
Cliff SwallowHirundinidae102008+25%2005
Common RavenCorvidae82018+233%2005
Black-billed MagpieCorvidae82018+96%2005
House FinchFringillidae82018+283%2005
Ring-billed GullLaridae82007+33%2004
Green-tailed TowheePasserellidae72018+350%2004
American RobinTurdidae72018+77%2004
Rock WrenTroglodytidae72018+240%2007
Northern PintailAnatidae62012+17%2005
American White PelicanPelecanidae62011+18%2006
Ruddy DuckAnatidae62012+100%2008
Savannah SparrowPasserellidae52017+100%2007
Cinnamon TealAnatidae42018+38%2006
Northern ShovelerAnatidae42017+0%2006
Lesser ScaupAnatidae42016-63%2004
Brewer's BlackbirdIcteridae42018-63%2004
Say's PhoebeTyrannidae42018+100%2005
Spotted TowheePasserellidae42018+100%2006
Gray FlycatcherTyrannidae42018+50%2007
Tree SwallowHirundinidae42018-80%2008
American KestrelFalconidae32017+100%2003
Blue-gray GnatcatcherPolioptilidae32018+380%2006
Ash-throated FlycatcherTyrannidae32018+38%2005
Yellow-breasted ChatIcteriidae32012+75%2005
Chipping SparrowPasserellidae32018+160%2007
Plumbeous VireoVireonidae32012+60%2007

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