The third title in the collection that began with USBBY Outstanding International Book Slug Days. Lauren, a third-grade student who has Autism Spectrum Disorder, takes on the challenges of sharing her best friend and persevering when a classmate mocks her bicycle's training wheels.

Irma is Lauren's best friend. Irma knows all the strategies Lauren uses when her Autism Spectrum Disorder makes it hard to "go with the flow." Lauren helps Irma learn English words and understand unfamiliar customs. So why does Irma suddenly want to introduce Lauren to her mountain-biking, litter-dropping neighbor Jonas? Why is Irma calling Jonas her friend?

As if sharing Irma weren't bad enough, Lauren also has an alarming new problem at school. Their teacher has announced a mountain biking day when the students will learn to ride their bikes on an obstacle course. But Lauren still uses training wheels. She just can't face the teasing she will get when her classmates see them. She isn't brave like Irma. She can't go with the flow like Dad. How can she possibly face this challenge?

From author Sara Leach and illustrator Rebecca Bender comes an honest and warm-hearted successor to the critically acclaimed Slug Days and Penguin Days. With straightforward text and frequent black-and-white illustrations, Duck Days is an accessible chapter book for any young reader with mountains of their own to climb.