Nitrogenous waste is excreted in the form of pellet or paste by:

Reptiles, birds, land snails, and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called uricotelic animals. Pavo (peacock) is a bird, hence it is uricotelic and excretes nitrogenous waste in the form of a pellet or paste.