Paul Shipton 
In the Eagle’s Nest (Oxford Read and Imagine Level 3) [PDF ebook] 

Grandpa takes Ben, Rosie, Alice, and Clunk high in the mountains to study eagles. They find a nest, and the eagles think that Clunk is food! Will Clunk be dinner? And what happens when two climbers find the nest? Read and Imagine provides great stories to read and enjoy, with language support, activities, and projects. Follow Rosie, Ben, and Grandpa on their exciting adventures . . .