Colorful sorting set introduces kids to number, pattern and comparison skills as they play. Birds come in two sizes and six vibrant colors (red, orange, yellow, green, blue, and purple), so they're easy to sort, match, and count. When playtime is over and the birds are home to roost, the bowl-shaped nests stack for easy storage. Set of 36 includes 24 baby birds in 6 colors, 6 momma birds, 6 color nests, and an Activity Guide.