The Fulmar, unrecorded as a breeding species 25 years ago, is now common along Guernsey's south cliffs and in the other larger islands. Spring and autumn are the highlights of the birdwatching year. From March until early June the islands become resting and refuelling stops for excellent numbers of waders and, passerines. Following the passage of weather fronts, the headlands of Pleinmont, Jerbourg and Fort Doyle can see hundreds of Wheatears, chats and other migrants trying to reorientate themselves before continuing their journey northwards to their breeding grounds. The autumn migration is less predictable, but rarities come from both sides of the globe.
Autumn is also the peak sea-watching period.
During north-westerly storms Gannets, Kittiwakes, Arctic Skuas, Bonxies, Manx and Sooty Shearwaters are blown towards the island as they battle their way down the English Channel towards the Bay of Biscay, and it is at Chouet headland that this spectacle can best be observed. In the summer months, this is also the foremost locality to see Storm Petrels as they venture out at dusk from their local breeding colonies. But for really spectacular seabirds, a trip to Alderney is essential. The highlight of a visit to this most northerly Channel Isle is a trip around the Gannet colonies of Les Etacs and Ortac. With over 2000 nests on each of these rocks, the air is filled with the sight and sound of these magnificent birds.