Ojo, N. A., et al. “Diurnal Fluctuations in Rectal Temperature of Pigeons During the Hot Dry Season of the Sahel Savannah Region”. International Journal of Natural and Practical Sciences (IJNPS), vol. 2, no. 2, May 2014, pp. 8-12, http://icidr.org.ng/index.php/Ijnps/article/view/525.