by William Swainson, Zoological Illustrations Series II… (1829)
“ For the use of this new and singularly formed bird, we are indebted to Professor Hooker, who, with his usual liberality, has recently sent for our inspection, a valuable box of Chilian birds, most of which are undescribed. They form the foundation of his son's, Mr William Hooker's collection, who has already commenced with much zeal the study of this interesting science.All the rasorial characters are strikingly displayed in this extraordinary type; which exhibits the greatest developement of the foot of any insessorial bird yet discovered. It no doubt lives entirely upon the ground ”
