Seabirds have suffered dramatic declines in population over recent decades. The most abundant seabirds of tropical oceans are Sooty Terns Onychoprion fuscatus and they have an IUCN Red List category of ‘Least Concern’. Ascension Island has the largest colony of Sooty Terns in the Atlantic Ocean and censuses between 1990 and 2013 have shown that its population size is static. In...
. John Hughes 0 Petra Quillfeldt, Behavioural Ecology & Ecophysiology group, Denmark 0 1 Centre for Ornithology, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham
