Gulls & Terns in Eilean Siar
Our list for Eilean Siar has 12 gulls & terns recorded regularly there: 4 residents, 6 summer visitors and 2 passage migrants
Most likely in October
GBIF · OctShare of all bird records in Eilean Siar in October, 2019–2024. Each month links to that month’s page.
All 12, most common first
European Herring GullLarus argentatusResidentCommon55–67 cmRecorded all year
Great Black-backed GullLarus marinusResidentCommon64–79 cmRecorded all year
Common GullLarus canusResidentCommon40–46 cmRecorded all year
Iceland GullLarus glaucoidesPassage migrantCommon52–60 cmRegularly Nov–Apr
Black-headed GullChroicocephalus ridibundusResidentCommon38–44 cmRecorded all year
Arctic TernSterna paradisaeaSummer visitorCommon33–39 cmRegularly Apr–Sep
Lesser Black-backed GullLarus fuscusSummer visitorCommon52–64 cmRegularly Mar–Oct
KittiwakeRissa tridactylaSummer visitorCommon37–41 cmRegularly Mar–Jan
Common TernSterna hirundoSummer visitorCommon31–35 cmRegularly Apr–Sep
Little TernSternula albifronsSummer visitorCommon21–25 cmRegularly Apr–Jul
Glaucous GullLarus hyperboreusPassage migrantUncommon62–68 cmRegularly Dec–Jun
Sandwich TernThalasseus sandvicensisSummer visitorUncommon36–41 cmRegularly May–Jul
Smallest to largest
Length, cm- Little Tern 21–25 cm
- Common Tern 31–35 cm
- Arctic Tern 33–39 cm
- Sandwich Tern 36–41 cm
- Kittiwake 37–41 cm
- Black-headed Gull 38–44 cm
- Common Gull 40–46 cm
- Iceland Gull 52–60 cm
- Lesser Black-backed Gull 52–64 cm
- European Herring Gull 55–67 cm
- Glaucous Gull 62–68 cm
- Great Black-backed Gull 64–79 cm
Body length, bill to tail. Rare birds in grey.
Data: 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