Gulls & Terns in Wyoming
Our list for Wyoming has 10 gulls & terns recorded regularly there: 4 summer visitors and 6 passage migrants
Most likely in October
GBIF · OctShare of all bird records in Wyoming in October, 2019–2024. Each month links to that month’s page.
All 10, most common first
Ring-billed GullLarus delawarensisSummer visitorCommon43–54 cmRegularly Mar–Dec
American Herring GullLarus smithsonianusPassage migrantUncommon53–65 cmRegularly Sep–Apr
Franklin's GullLeucophaeus pipixcanSummer visitorUncommon32–36 cmRegularly Mar–Oct
Bonaparte's GullChroicocephalus philadelphiaPassage migrantUncommon28–38 cmRegularly Oct–May
Lesser Black-backed GullLarus fuscusPassage migrantUncommon52–64 cmRegularly Sep–Apr
Forster's TernSterna forsteriSummer visitorUncommon33–36 cmRegularly Apr–Sep
Iceland GullLarus glaucoidesPassage migrantUncommon52–60 cmRegularly Nov–Apr
Sabine's GullXema sabiniPassage migrantUncommon27–33 cmRegularly Aug–Oct
Black TernChlidonias nigerSummer visitorRare22–26 cmRegularly May–Sep
Common TernSterna hirundoPassage migrantRare31–35 cmRegularly May–Oct
Smallest to largest
Length, cmData: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made