Forest Picori
The Forest Minish are the Minish that live in the Minish Woods, and throughout Hyrule Field. They are easily noticed by the green clothes, red cone-shaped hats, and feather-like tails. Their elder is Gentari, and the wisest member aside from him is Festari.
Quote from The Legend of Zelda: The Minish Cap Forest Picori figurine:
"Not visible to the eyes of adults, they delight in making humans happy by hiding helpful items and Rupees under grass and rocks all over the world."