Akau Hena, S. ., M. . Legbo Sonfada, A. . Danmaigoro, and A. . Bello. “Comparative Weight Assessment of Some Visceral Organs in Adult Pigeon (columbia Livia) and Japanese Quail (coturnix Japonica)”. Scientific Journal of Zoology, vol. 1, no. 1, Aug. 2012, pp. 17-22, http://sjournals.com/index.php/sjz/article/view/1190.