Larus hyperboreus
Larus hyperboreus
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Larus hyperboreusLiên quan
Larus Larus glaucescens Larus hyperboreus Laruscade Larus marinus Larus armenicus Larus delawarensis Larus glaucoides thayeri Larus sabini Larus saundersiTài liệu tham khảo
WikiPedia: Larus hyperboreus http://www.birds.cornell.edu/clementschecklist/dow... http://www.iucnredlist.org/details/106003225/0 https://commons.wikimedia.org/wiki/Category:Larus_...