Edwards, H & Halle, L. J / September 1991 – vol. 84, issue 9, pp 395–395 Roosting behaviour of seabirds. It is human nature to avoid raising even obvious questions when no answer appears to be in sight. I nevertheless raise such a question here. Birds of the open ocean, far from land, must not only roost but also sleep on the surface of waters that contain sharks or other predatory fish. Surely they have some means of escaping death from undersea attack, but what can i... This article is only available to registered users.To read more, please log in or purchase a subscription.