Gulls & Terns in Slovenia
Our list for Slovenia has 13 gulls & terns recorded regularly there: 2 residents, 4 summer visitors, 2 winter visitors and 5 passage migrants
Most likely in October
GBIF · OctShare of all bird records in Slovenia in October, 2019–2024. Each month links to that month’s page.
All 13, most common first
Yellow-legged GullLarus michahellisResidentCommon52–68 cmRecorded all year
Black-headed GullChroicocephalus ridibundusResidentCommon38–44 cmRecorded all year
Common TernSterna hirundoSummer visitorCommon31–35 cmRegularly Apr–Sep
Common GullLarus canusWinter visitorCommon40–46 cmRegularly Oct–Apr
Little TernSternula albifronsSummer visitorCommon21–25 cmRegularly Apr–Aug
Mediterranean GullIchthyaetus melanocephalusSummer visitorUncommon37–40 cmRecorded all year
Sandwich TernThalasseus sandvicensisWinter visitorUncommon36–41 cmRecorded all year
White-winged TernChlidonias leucopterusPassage migrantUncommon20–27 cmRegularly Apr–May
Black TernChlidonias nigerSummer visitorUncommon22–26 cmRegularly Apr–Sep
Little GullHydrocoloeus minutusPassage migrantUncommon25–30 cmRegularly Sep–May
Lesser Black-backed GullLarus fuscusPassage migrantUncommon52–64 cmRegularly Sep–Apr
European Herring GullLarus argentatusPassage migrantUncommon55–67 cmRegularly Dec–Jan
Gull-billed TernGelochelidon niloticaPassage migrantRare33–42 cmRegularly May–Aug
Smallest to largest
Length, cm- Little Tern 21–25 cm
- White-winged Tern 20–27 cm
- Black Tern 22–26 cm
- Little Gull 25–30 cm
- Common Tern 31–35 cm
- Gull-billed Tern 33–42 cm
- Mediterranean Gull 37–40 cm
- Sandwich Tern 36–41 cm
- Black-headed Gull 38–44 cm
- Common Gull 40–46 cm
- Lesser Black-backed Gull 52–64 cm
- Yellow-legged Gull 52–68 cm
- European Herring Gull 55–67 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