B00303 Perky Pet Fly Thru Tube Fly Thru Wild Bird Feeder. Capacity 2 lbs Features 2 metal mesh fly thru feeding stations that will encourage many feeding birds while providing you hours of bird watching enjoyment. It is a two in one feeder for birds to rest as well as feed. Four mesh sides make bird watching more visible and more entertaining. A protective roof helps keep seed dry and adds charm to the feeder for a beautiful addition to any yard.