All birdhouses require birds and this set of Sweet Birds on a Branch dies is part of the Spellbinders Birdhouses Through the Seasons Collection designed by Vicky Papaioannou. This die set is made from thin metal that not only cuts, but also embosses and can be used as a stencil and contains 9 pieces ranging from a branch and leaves to 6 different birds. This die set is compatible with most leading die cutting machines and papers (sold separately). The largest die measures 3.9" x 1.4" and the smallest measures 0.25" x 0.63". These dies will add another level of cuteness to the already incredibly cute birdhouses in this collection.