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作者:... Kane Brides , Charles Findlay , Wesley J. Halton
来源:[J].Ringing & Migration, 2014, Vol.29 (1), pp.41-43Taylor & Francis
摘要:The majority of British Mute Swans Cygnus olor do not migrate large distances. Of 119 Mute Swans ringed on the Isle of Man, 23 (19%) were subsequently sighted away from the island, ten of which subsequently returned to the island. Approximately half of these were cygnets when rin...

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