All of our animal and bird stick-ons are printed on self-adhesive, peel and stick waterproof vinyl. These stick-ons are designed for indoor or outdoor use on any flat, clean, dry surface. They are removable and the adhesive will not remain on the wall when the stickers are removed. Adheres to almost any smooth surface such as metal, wood, glass, cardboard, paper, plastic etc. To apply, simply remove the backing and stick it on! VERY EASY! You will receive simple application instructions with your order. Goldfinch measures 6.5" x 4" . Beautiful Birds Set sold on website - set includes all of the birds. Macaw, Eagle, chicks, rooster also available on website.