Books like Waiting for Wings
Lois Ehlert
Waiting for Wings is 40 pages, about 44 minutes at 250 words a minute.
6 books to read next
How long each takes
Are You A Butterfly? 31 min 
Strawberry Shortcake and the Butterfly Garden 34 min 
From Caterpillar to Butterfly 34 min 
Where Butterflies Grow 35 min 
A Butterfly Is Patient 44 min 
The Magic School Bus And The Butterfly Bunch 35 min Bar height shows length. Estimated at 250 words a minute.