Amuno, John B., Renato Massa, and Geoffrey Okethowengo. “Some Observations on Nesting African Grey Parrots, Psittacus Erithacus, in Uganda”. Rivista Italiana di Ornitologia 80, no. 1 (December 31, 2010). Accessed May 3, 2024. https://sisn.pagepress.org/rio/article/view/86.