 Several of Leguat 's observations were later confirmed through study of subfossil Rodrigues solitaire remains . The curved contour lines of the pelvis also support the roundness of its hind parts , which he compared to that of a horse . Also , a ridged surface appears at the base of the beak , indicating the position of the <unk> ridge , which Leguat described as a " widow 's peak " . Before fossils of the carpal knob were found , Strickland noted that the keel of the sternum of the Rodrigues solitaire was so well @-@ developed as to almost indicate it had possessed the power of flight ; however , since the humerus was very short he inferred that this was instead related to Leguat 's claim that they used their wings for defence . 
