Sticker Set The BirdVoice™ Sticker Set gives you all the advantages of BirdVoice™ within the comfort and familiarity of your favourite bird guide. Species have been categorised by their scientific order to fall in line with the vast majority of reference guides. Simply peal off the sticker for each bird and stick it into a clear area on the page of the corresponding bird in your guide. The three pages of stickers have calls, songs and guides for 270 species of British Birds. Price: £15.00 Key Features: - Individual sticker dimensions: 19mm diameter - Easy peal circles - Three sound areas per sticker (Call, Song, Voice Guide)