S., S., Zuhud, E.A.M., Setiadi, Y. and Masyud, B. 2017. Determination of Keystone Species that Influences the Diversity of Birds Species in the Land of Reclamation and Revegetation of Post-Coal Mining. International Journal of Sciences: Basic and Applied Research (IJSBAR). 35, 3 (Sep. 2017), 337–347.