加拿大
毛茸茸的红头小鸭，帆布背，环颈鸭`Downy Young Of Red~Head, Canvas~Back, Ring~Necked Duck (1922~1926) by Allan Brooks
美国
小口哨水鸭、流浪树鸭、黄褐色树鸭`Lesser Whistling Teal, Wandering Tree Duck, Fulvous Tree Duck (1922~1926) by Louis Agassiz Fuertes
美国
白脸树鸭、黑腹树鸭、灰胸树鸭`White~Faced Tree Duck, Black~Bellied Tree Duck, Gray~Breasted Tree Duck (1922~1926) by Louis Agassiz Fuertes
鸭子
森林池塘中的雄性木鸭子，动物王国中藏书色彩的研究`Male Wood Duck in a Forest Pool, study for book Concealing Coloration in the Animal Kingdom (ca. 1905~1909) by Abbott Handerson Thayer
美国
巴哈马鸭、加拉帕戈斯岛鸭、非洲红嘴鸭`Bahama Duck, Galapagos Island Duck, African Red~Billed Duck (1922~1926) by Louis Agassiz Fuertes
