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是否家燕tytleri亞種?Is it tytleri type of Barn Swallow?

是否家燕tytleri亞種?Is it tytleri type of Barn Swallow?

想請教下是否家燕tytleri亞種?或是與常見的gutturalis的雜交種?謝謝!
Is it tytleri type of Barn Swallow? Or just a mix with gutturalis? Thanks a lot!

03/07/2010


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