Sealed set. The LEGO Ideas Birds set (21301) is a brand new, sealed product released in 2015. With 580 pieces, this set allows builders to create various bird models, exploring the theme of nature and wildlife through the LEGO lens. Designed for ages 12 and up, this set offers a mix of creativity and challenge for LEGO enthusiasts interested in animals and the outdoors. The set includes three different birds to build and display, making it a perfect addition to any LEGO collection.