glaucous gull (Larus hyperboreus); burgomaster
black-headed gull (Chroicocephalus ridibundus); hooded gull
skua (any bird of family Stercorariidae, incl. the jaegers); pomarine jaeger (Stercorarius pomarinus); pomarine skua
laughing gull (Leucophaeus atricilla)
northern fulmar (Fulmarus glacialis)
glaucous-winged gull (Larus glaucescens)