Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleTHE DISTANCE AT WHICH SITTING BIRDS CAN BE SEEN AT SEA.AuthorsDixon, T. J.PublicationIbis, 1977, Vol 119, Issue 3, p372ISSN0019-1019Publication typeArticleDOI10.1111/j.1474-919X.1977.tb08260.x