The State of the World’s Migratory Species report, released today, concludes that almost half of the migratory animals on a UN list of vulnerable species are seeing population declines. They include some of the world’s most iconic animals, says Amy Fraenkel at the UN’s Convention on the Conservation of Migratory Species of Wild Animals. Under the agreement, known as the Convention on Migratory Species (CMS), 1189 species were identified as being of particular interest, partly because they regularly cross national borders during their migrations. Sign up to newsletterTo understand how these migratory animals are faring today, Fraenkel and her colleagues conducted a comprehensive analysis of the conservation data for all the species. The team also identified a further 399 migratory animals – including many species of albatross – that are vulnerable to extinction but that are not currently listed under CMS.