With big and colourful wings, butterflies can be very beautiful. Learn all about butterflies in this high-level phonics book.Part of Reading Stars Phonics - our structured programme of fully decodable phonics readers to support the teaching of phonics using the UK Government's Letters and Sounds programme - Flutter By, Butterfly! is a Phase 5 book.It introduces some alternative pronunciations of known graphemes for reading: ea (head), ou (you, could), y (by, gym, very), ch (school), and the common exception words their, people, again, through, many, because, different, any, eyes, once.