Updated with vibrant cover art! A robin has moved into the garden, and the WellieWishers couldn't be more excited. As they care for the robin, they learn new things about what birds like to do and eat. But one day, the robin disappears! Will the girls be able to find the robin and his secret? Animal-lover Willa is on the case! 96 pages. Paperback. Author: Valerie Tripp.