Cammann, S. 1950. The story of hornbill ivory. Sarawak Mus. Bull. (Pennsylvania) 15(4): 19-47.
Collar, N. J. 2015. Helmeted Hornbills Rhinoplax vigil and the ivory trade: the crisis that came out pf nowhere. BirdingASIA 24: 12-17.
Harrisson, T. 1960. Birds and men in Borneo. In B. E. Smythies & G. W. H. Davison (1999) The birds of Borneo. Fourth Edition. kota Kinabalu: Natural History Publications.
Hii, R. 2015. http://www.huffingtonpost.com/robert-hii/helmeted-hornbills-on-the_b_6804302.html
Kemp, A. C. 2001. Family Bucerotidae (hornbills). pp. 436-523 in J. del Hoyo, A. D. Elliott & J. Sargatal, eds. Handbook of the birds of the world, 6. Barcelona: Lynx Edicions.
Liang, J. et al. 2014. Identification characteristics of natural and imitation hornbill ivory. J. Gemmology 34: 42-49.
Cammann, S. 1950. The story of hornbill ivory. Sarawak Mus. Bull. (Pennsylvania) 15(4): 19-47.
Collar, N. J. 2015. Helmeted Hornbills Rhinoplax vigil and the ivory trade: the crisis that came out pf nowhere. BirdingASIA 24: 12-17.
Harrisson, T. 1960. Birds and men in Borneo. In B. E. Smythies & G. W. H. Davison (1999) The birds of Borneo. Fourth Edition. kota Kinabalu: Natural History Publications.
Hii, R. 2015. http://www.huffingtonpost.com/robert-hii/helmeted-hornbills-on-the_b_6804302.html
Kemp, A. C. 2001. Family Bucerotidae (hornbills). pp. 436-523 in J. del Hoyo, A. D. Elliott & J. Sargatal, eds. Handbook of the birds of the world, 6. Barcelona: Lynx Edicions.
Liang, J. et al. 2014. Identification characteristics of natural and imitation hornbill ivory. J. Gemmology 34: 42-49.
盔犀鳥的盔突形狀的確就像一頂頭盔,牠會像使用榔頭一樣,用沉重的盔突開爛木或拆下樹皮食用;此外,盔突也是牠們空中比武大會的武器,敵對的兩隻雄鳥(有時甚至可能是兩隻雌鳥)為了爭奪食物或築巢資源而打鬥。《亞洲犀鳥生態與保育》(The Ecology and Conservation of Asian Hornbills)是一本權威性的著作,作者瑪格麗特.F.齊內(Margaret F. Kinnaird)與提摩西.G.歐布萊恩(Timothy G. O’Brian)在書中如此描述這項精彩的表演:「雙方撞擊時發出的聲音─「碰」的一聲巨響─在距離牠們至少五百公尺遠的樹林底部都能聽見。大部分的撞擊都發生在滑翔過程中,力道之大能讓其中一方或雙方都被往後拋,在空中特技般誇張地翻個幾圈之後,才能讓自己回到原本的飛行高度。」
時間繼續流轉,人們開始從亞非兩洲直接進口活生生的犀鳥到英國,牠們那有如人一般的步伐、奇特的叫聲以及怪異的口喙都與歐洲人曾見過的任何鳥類大相逕庭,讓人們驚愕無比,再知道牠那奇異的育兒行為,眾人的好奇心又更加高漲。倫敦動物園曾豢養數隻犀鳥,牠們總是園中最受歡迎的動物之一,也時常登上例如《倫敦新聞畫報》(Illustrated London News)之類的出版刊物。不過也並非所有人都為牠們痴狂,諾里治主教愛德華.史坦利(Edward Stanley)曾寫出幾本人類史上最熱情洋溢卻錯誤百出的鳥類專著,他就認為犀鳥那「看起來巨大又畸形的鳥喙」毫無可觀之處。