especially the
tarsometatarsus, which is much longer and more slender than in O. scops. The estimated body weight and wing loading,
together with the proportions of hindlimb bones (femur, tibiotarsus and tarsometatarsus) in relation to total length of leg
bones (femur+tibiotarsus+tarsometatarsus), seem to indicate a ground-dwelling life-style. Human arrival and subsequent
habitat alterations (introduction of alien taxa, burning, etc.) are the most probable causes of its extinction. The same species
or a close relative is documented from dunes on the island of Porto Santo, but the quality of preservation of its bones
precludes more certain identification