灰燕鸥 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "灰燕鸥" in Chinese language version.

refsWebsite

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low place

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1,559^th place

332^nd place

526^th place

cornell.edu

Clements, J. F.; Schulenberg, T. S.; Iliff, M. J.; Billerman, S. M.; Fredericks, T. A.; Gerbracht, J. A.; Lepage, D.; Sullivan, B. L.; Wood, C. L. The eBird/Clements checklist of Birds of the World: v2021.. 2021 [2022-08-17]. （原始内容存档于2022-03-12）.

International Ornithologists' Union. Gill, Frank; Donsker, David; Rasmussen, Pamela , 编. IOC World Bird List 12.1. [2022-08-17]. （原始内容存档于2022-04-01）（英语）.
Clements, J. F.; Schulenberg, T. S.; Iliff, M. J.; Billerman, S. M.; Fredericks, T. A.; Gerbracht, J. A.; Lepage, D.; Sullivan, B. L.; Wood, C. L. The eBird/Clements checklist of Birds of the World: v2021.. 2021 [2022-08-17]. （原始内容存档于2022-03-12）.