Lost Voice
Book 4 in the Seordag Stories series.
Mobile chick Greeny makes up a new song, but when Bluey and Pinky join in, Pinky loses his voice. They go to see if their mother Seordag can help. Who will Seordag call on? Could Marlene the Crofter help, or perhaps the Seer, or even the Cosmic Cockerel?