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World Migratory Bird Day 2023 poster. Three droplets of water are filled with a rippling pattern of blue-green waves, with a map of the world overlain on the waves. There are many colourful migratory birds on the poster, drawn in a stencil style., These birds include Atlantic Puffin, Osprey, Barn Swallow, Turtle Dove, Spoon-billed Sandpiper and a Dalmation Pelican.