Puffins are such fascinating birds - aptly called Clowns of the Sea. I have already talked about my "slight" obsession after I read Puffling by the Australian author Margaret Wild and illustrated by Julie Vivas.
Yesterday I found this book from 2012 called Puffling Patrol which is set in Iceland. On the island of Heimaey there is a small town. When the pufflings set off from their burrows, for the first time, the lights of the town confuse them so children and adults mount a puffin patrol to rescue them.
This is a longer picture book which could happily sit in a non fiction section of a library. At the back of the book there is a puffin fact page, reading list and glossary. You could also use the beautiful images in this book for a discussion with children about perspective and perhaps compare this art with the images in Puffling by Margaret Wild.
Image Books Illustrated http://www.booksillustrated.com.au/bi_prints_indiv.php?id=51
Whether sheltered in a box or held carefully in the children’s hands, the pufflings are irresistible. Kirkus
Image Lee & Low https://www.leeandlow.com/books/puffling-patrol/interviews