The Scilly islands are famous amongst birdwatchers, especially twitchers for their almost magnetic ability to attract rare birds from all corners of the globe. The peak time of year for this is generally in October when it is not unusual for several of the rarest birds in Europe to share this archipelago. One reason for the success of these islands in producing rarities is the extensive coverage these islands get from birdwatchers, but archipelagos are often favoured by rare birds which like to make landfall and eat there before continuing their journeys and often arrive on far flung islands first.