1. Guide to Living Birds, Macmillan International Higher Education
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Webb%2C+J.%3B+Wallwork%2C+J.%3B+Elgood%2C+J.+Guide+to+Living+Birds.+2016&btnG=
2. Paramount Roles of Agroforestry Systems as Habitat for Bird Species;Egwumah;Paramount Ecol. Resour.,2022
3. Galliformes of Khangchendzonga Biosphere Reserve, Sikkim, India;Sathyakumar,2010
4. Pheasants Learn Five Different Binomial Color Discriminations and Retain these Associations for at Least 27 Days
5. The North American Quails, Partridges, and Pheasants
https://books.google.rs/books?hl=sr&lr=&id=o6g8DwAAQBAJ&oi=fnd&pg=PA7&dq=5.%09Johnsgard,+P.+The+North+American+Quails,+Partridges,+and+Pheasants.+2017.&ots=kGFscwGOq3&sig=4o195aOimtu5b20vD0ExqsMDPZ4&redir_esc=y#v=onepage&q=5.%09Johnsgard%2C%20P.%20The%20North%20American%20Quails%2C%20Partridges%2C%20and%20Pheasants.%202017.&f=false