Some have said that mandarin ducks, which symbolize constancy in love, are not actually as faithful as they are made out to be. But Sun Yuan-hsun, an ornithology PhD who has done field research on mandarins, says they stay monogamous at least throughout each season.
有人說象徵愛情彌堅的鴛鴦其實並不忠貞，實地進行調查的鳥類學博士孫元勳卻說：它們至少當季維持一夫一妻制。