Laridae
鸥科
ōu kē

Итэлгэн itelgeŋ (also итэлхэн itelkheŋ) refers to a kind of falcon. The name for the Saker Falcon, идлэг idleg, appears to related.

Larus fuscus includes Larus fuscus heuglini. Depending on the taxonomy, many sources list Larus heuglini as a separate species. Names include:
乌黑银鸥
(烏黑銀鷗)
wū-hei yín-ōu
'black silver-gull' (35)
灰林银鸥
(灰林銀鷗)
huī-lín yín ōu
'Huilin's silver-gull' (huilin literally 'grey forest') (3)
灰林鸥
(灰林鷗)
huī-lín ōu
'Huilin's gull' (huilin literally 'grey forest') (alt in 3)

Larus fuscus includes Larus fuscus heuglini. Internet sources propose the following as names for Larus heuglini:
(灰林银鸥)
灰林銀鷗
huī-lín yín ōu
'Huilin's silver-gull' (huilin literally 'grey forest')
(灰林银鸥)
灰林銀鷗
huī-lín yín ōu
'Huilin's silver-gull' (huilin literally 'grey forest')

Larus fuscus includes Larus fuscus heuglini. Some Internet sources propose the following for Larus heuglini:
ホイグリンカモメ
(ホイグリン鴎)
hoigurin kamome
'Heuglin's gull'

Larus fuscus includes Larus fuscus heuglini. As an independent species the following name is given for Larus heuglini:
Chim Mòng biển Heuglin
'Heuglin's sea gull (bird)' (33)

In classing the Asian herring gulls as Larus smithsonianus (with subspecies L. s. vegae and L. s. mongolicus), Howard and Moore run counter to every existing Chinese naming system. Very few sources even have a name for Larus smithsonianus. Here we've adopted Larus argentatus as per traditional naming. More recent sources give names for L. vegae and L. mongolicus. They include:
Larus vegae:
西伯利亚银鸥
(西伯利亞銀鷗)
xībólìyà yín-ōu
'Siberian silver-gull' (2), (4), (35)
织女银鸥
(織女銀鷗)
zhī-nǚ yín-ōu
'weaving girl (=Vega) silver-gull' (3)
织女鸥
(織女鷗)
zhī-nǚ ōu
'weaving girl gull' (alt in 3)
Larus mongolicus:
红脚银鸥
(紅腳銀鷗)
hóng-jiǎo yín-ōu
'red-legged silver-gull' (7)
蒙古银鸥
(蒙古銀鷗)
měnggǔ yín-ōu
'Mongolian silver-gull' (35)

In classing the Asian herring gulls as Larus smithsonianus (with subspecies L. s. vegae and L. s. mongolicus), Howard and Moore run counter to the existing Taiwanese naming system. As of 2014, the Chinese Wild Bird Federation still lists Larus argentatus as the relevant species occuring in Taiwan. For L. vegae, some Internet sites propose the following name:
Larus vegae:
(织女银鸥)
織女銀鷗
zhī-nǚ yín-ōu
'weaving girl (=Vega) silver-gull'

In classing the Asian herring gulls as Larus smithsonianus (with subspecies L. s. vegae and L. s. mongolicus), Howard and Moore run counter to the existing Japanese naming system. Here we use the original naming for L. argentatus. Subspecies are as follows:
Larus argentatus vegae:
セグロカモメ
(背黒鴎)
se-guro kamome
'black-backed gull'

Larus argentatus smithsonianus:
アメリカセグロカモメ
(アメリカ背黒鴎)
amerika se-guro kamome
'American black-backed gull'
H. Hiraizumi's Birding Page: 日本産鳥類目録改訂第7版（日本鳥学会，2012）

In classing the Asian herring gulls as Larus smithsonianus (with subspecies L. s. vegae and L. s. mongolicus), Howard and Moore run counter to existing naming systems. Korean bird lists contain a name for Larus argentatus smithsonianus, which is adopted here, but also have the following names for what Howard and Moore consider subspecies of L. smithsonianus:
L. vegae:
재갈매기
jae-galmaegi
'ash gull'
L. mongolicus:
노랑발갈매기
norang-bal-galmaegi
'yellow-legged gull'

中国鸟类种和亚种分类名录大全（修订版） 郑作新 著 科学出版社 北京 2000年
A Complete Checklist of Species and Subspecies of the Chinese Birds (Revised Edition) by Cheng Tso-Hsin, Science Press, Beijing 2000

中国鸟类分类与分布名录 主编：郑光美 科学出版社 北京 2005年
A Checklist on the Classification and Distribution of the Birds of China Chief editor: Zheng Guangmei, Science Press, Beijing 2005

中国鸟类野外手册（中文版）约翰・马敬能、卡伦・菲利普斯，合作者：荷芬奇，翻译：卢和芬 湖南教育出版社 长沙 2000年
A Field Guide to the Birds of China (Chinese translation) by John MacKinnon, Karen Phillipps, in collaboration with He Fen-qi, translated by Lu Hefen, Hunan Jiaoyu Chubanshe (Hunan Educational Press) Changsha 2000

世界鸟类分类与分布名录 主编：郑光美 科学出版社 北京 2002年
A Checklist on the Classification and Distribution of the Birds of the World Chief editor: Zheng Guangmei, Science Press, Beijing 2002

世界鸟类名称（拉丁文、汉文、英文对照）第二版 郑作新等 科学出版社 北京 2002年
Birds of the World (Latin, Chinese and English Names) 2nd ed. by Cheng Tso-Hsin et al, Science Press, Beijing 2002

中国鸟类分布名录 第二版 郑作新 科学出版社 北京 1976年
(Checklist of the Classification of Birds of China 2nd edition by Cheng Tso-Hsin, Science Press, Beijing 1976)

香港及華南鳥類（第六版）（翻譯成中文及重新修訂） 尹璉、費嘉倫、林超英 香港性徵特區政府新聞處政府印務局 1994年
Birds of Hong Kong and South China (6th edition, translated into Chinese and newly revised) by Clive Viney, Karen Phillipps, Lin Chaoying, Hong Kong Govt. Press 1994

Danh Lục Chim Việt Nam (In lần thứ hai) (Checklist of the Birds of Vietnam) Võ Quý, Nguyễn Cử, Nhà Xuất Bản Nông Nghiệp, Hà Nội 1999

Chim Việt Nam Nguyễn Cử, Lê Trọng Trải, Karen Phillipps; Nhà Xuất Bản Lao Động - Xã Hội, 2000

汉蒙名词术语分类词典（自然科学部分） Mongolian (Cyrillic): Хятад Монгол нэр томъёоны зүйл хуваасан толь (байгалийн шинжлэх ухааны бүлэг) (Chinese-Mongolian classified terminological dictionary, natural sciences part) by 《汉蒙名词术语分类词典》编纂委员会 Mongolian (Cyrillic): "Хятад Монгол нэр томъёоны зүйл хуваасан толь" найруулах комисс (Chinese-Mongolian classified terminological dictionary editorial committee), Inner Mongolian People's Press, Hohhot 1990

内蒙古动物志 (第三卷 鸟纲 非雀形目) Fauna Inner Mongolia (Volume 3 Aves Non-Passerines) 主编：旭日干 (Chief Editor: Xurigan), 内蒙古人大学版社 (Inner Mongolian University Press), Hohhot 2013