The Birch Forager is a wonderful foraging opportunity for all sizes of birds.  The holes are small so little ones can pick into them and the larger birds can chew through to get the treat.  The forager measures 3" high and 2-3" in diameter.  It comes with a hole down the center threaded with leather to hang or as a handle for the larger birds.  Buy two and add them to a skewer.  The size is perfect for the Avian Organics Mango Ginger Minis.