Information Source for Taxonomy: | Baptista, L.F., Trail, P.W., Horblit, H.M., Kirwan, G.M., Garcia, E.F.J. & Boesman, P. (2017). Grey-capped Emerald Dove (Chalcophaps indica). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions |