Arctic Skua (Stercorarius parasiticus)Great Skua or Bonxie (Stercorarius skua)Chilean SkuaChilean SkuaBlack Skimmer (Rynchops niger)Black-tailed GullBlack-tailed Gull (1st summer)Kelp GullBlack-headed Gull (Larus ridibundus)Bonaparte's GullRoss's Gull (Rhodostethia rosea)Ross's Gull (Rhodostethia rosea)Little Gull (Larus minutus)Little GullLittle Gull (Larus minutus)Slender-billed GullMediterranean GullMediterranean Gull (Ichthyaetus melanocephalus)Mediterranean Gull (Ichthyaetus melanocephalus)Mediterranean Gull (Ichthyaetus melanocephalus)