川中丘陵地区黑尾蜡嘴雀繁殖期声行为的初步研究
천중구릉지구흑미사취작번식기성행위적초보연구
The preliminary Study of the Vocal Behavior of Yellow-billed Grosbeak (Eophona migratoria) during Breeding Season in Sichuan Hilly Areas
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