Professor John O'Halloran is an ornithologist at UCC and has published over 120 academic papers on birds and pollution as well as contributing in a number of books. In this the final programme in the series, John focusses on the Whooper swan, which is one of three species of swan that occur in Ireland along with the Mute Swan and the Bewick's swan. The adult Whooper swan is white with a yellow bill that is usually held parallel to the water. More distinctive to the Whooper swan though is it's distinctive voice of a resonant hoop-hoop revealing the reason that swans so often evoke passion and affection. The Whooper species range from Scandinavia to Korea with the Icelandic population visiting Ireland each winter. They spread out along the coasts and on freshwater lakes and marshes as well as low-lying agricultural land. This programme will track the large migratory bird from its breeding grounds in Iceland and follow their movements to Ireland in late September before their departure again in the spring.