Soni, K.C., et al. “Nesting Ecology, Interspecific Interaction and Nesting Association of Indian Black Ibis (Pseudibis Papillosa) Inhabiting the Arid Zone of Rajasthan”. Our Nature, vol. 8, no. 1, Feb. 2011, pp. 12-25, doi:10.3126/on.v8i1.4307.