My Father Knows the Names of Things by Jane Yolen, illustrated by Stephanie Jorisch

From chapters.ca:
From each bird that sings, to every kind of cloud, to all of the planets, the father in this story knows the names of them all - and takes the time to impart his knowledge to his child. As they walk together outside, the father points out which mosses are the fuzziest and which insects are the buzziest, which flowers are the tallest and which beetles are the smallest. Jane Yolen's lyrical text is complemented by Stephane Jorisch's soft artwork, a pairing that is touching without being overly sentimental, which makes this the perfect choice for fathers and children to share.