Ahmed, B., Kalla, D. J. U., Saleh, B., Ibrahim, T., and Shuaibu, A., “Seasonal Variations in Live Weight and Testicular Histomorphometry of Two Strains of Helmeted Guinea Fowls (Numida meleagris)”, Nig. J. Anim. Sci. Technol, vol. 5, no. 4, pp. 58 - 70, Jan. 2023.