Even today many bird fanciers are still highly resistant against feeding.
盡管時(shí)移勢易,但今時(shí)今日仍有不少鳥迷對(duì)類胡蘿卜素濃縮抱著抗拒態(tài)度.
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Copying this logic, bird fanciers started color feeding their birds.
抄襲了這邏輯, 鳥迷開始以含有類胡蘿卜素的食物為籠鳥造色.
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