Sheets, M. D., Lindstrom, K. E., Carbone, L. G. 2011. The effects of sanded (bottom only) perches on finch feet. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 779 (Abstract #P157).
Birds that are kept in captivity often require nail trims, presumably due to the lack of opportunity to wear the nails down on natural substrates. For many birds, restraint for the nail trim may result...