BTO-Blue-Tit-Great-Tit_Coal-Tit-Records
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资源简介：
Data were originally supplied by the British Trust for Ornithology. Ring_no = the individual-specific number on the metal ring associated with the bird.
创建时间：
2019-01-01
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Data were originally supplied by the British Trust for Ornithology. Ring_no = the individual-specific number on the metal ring associated with the bird.