How does Karen Cushman use imagery in Catherine, Called Birdy?

Examples of Imagery:

"I think I love geese more than any other birds because no one else does. . . They are cunning, greedy, shortsighted, and stubborn - much like me, now that I think on it."

"The beast my father roared especially ugly roars today. I never seem to please him, although it is true I never try."

"I think sometimes that people are like onions. On the outside smooth and whole and simple but inside ring upon ring, complex and deep."