Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Poultry--perhaps because of the fact that evolution resulted in the transformation of their forelimbs into wings, with a resultant greater strain on their remaining two legs-seem much like people in being bothered by "bad feet." Frequently the cause lies in a sort of "no man's land" between nutrition and management, but the fact remains that a host of disorders of the feet and legs of chickens and turkeys continues to plague the veterinarian, the nutritionist and the poultryman.
Balloun, Stanley L.
"The Problem of "Lame" Chickens and Turkeys,"
Iowa State University Veterinarian: Vol. 20
, Article 5.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol20/iss2/5