Gulls & Terns in Derry
Our list for Derry has 10 gulls & terns recorded regularly there: 3 residents, 3 summer visitors, 3 passage migrants and 1 scarce visitor
Most likely in October
GBIF · OctShare of all bird records in Derry in October, 2019–2024. Each month links to that month’s page.
All 10, most common first
European Herring GullLarus argentatusSummer visitorCommon55–67 cmRegularly Mar–Jan
Great Black-backed GullLarus marinusResidentCommon64–79 cmRecorded all year
Black-headed GullChroicocephalus ridibundusResidentCommon38–44 cmRecorded all year
Common GullLarus canusResidentCommon40–46 cmRegularly Mar–Nov
Lesser Black-backed GullLarus fuscusSummer visitorCommon52–64 cmRegularly Mar–Oct
Sandwich TernThalasseus sandvicensisPassage migrantCommon36–41 cmRegularly May–Sep
KittiwakeRissa tridactylaSummer visitorCommon37–41 cmRegularly Mar–Sep
Common TernSterna hirundoPassage migrantCommon31–35 cmRegularly Jul–Sep
Mediterranean GullIchthyaetus melanocephalusPassage migrantUncommon37–40 cmRegularly Sep
Arctic TernSterna paradisaeaScarceUncommon33–39 cmRegularly Jul
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