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蛇鹈ISBN 978-0-643-06511-6. (原始内容存档于2021-03-05) (英语). 弗兰克·吉尔 (鸟类学家)(英语:Frank Gill (ornithologist )); Donsker, David (编). Hamerkop, Shoebill, pelicans, boobies,
羅伯特·里奇韋Lavender)、米爾頓·布拉德利的布拉德利藍(Bradley's Blue)以及田野嚮導先驅法蘭克·查普曼(英语:Frank Chapman (ornithologist ))(Frank Chapman)和水彩畫家塞繆爾·普勞特(英语:Samuel Prout)(Samuel Prout)等。
2009年3月逝世人物列表 [April 14, 2009]. (原始内容存档于July 19, 2011). Eric Simms: naturalist, ornithologist , author and conservationist Barker, Dennis. Joan Turner. The Guardian