Recent analyses of P. Sandersi bones, which were discovered decades ago on airport grounds, showed that this creature is the biggest flying bird on record-more than twice the size of the modern record holder, the wandering albatross. In fact, P. Sandersi is bigger than some experts had thought possible for a volant bird. But it possesses several key adaptations to air travel (right) comparing this animal's proportions with those of living birds helped researchers to reconstruct its flight style (below)