Nature Forever Bird Feeder Mix, 900g, 1 Piece NFS bird feeder mix has been created to attract a wide variety of birds and song to your homes and gardens. Professionally blended it can be used in NFS feeders, hut feeders and open trays. Each ingredient has been specifically chosen for its high energy content and to encourage the widest variety of birds into your garden. With food resources scarcer now, it is essential to feed garden birds all year round. Once you have started to feed the birds it is important to continue this and develop a routine as the birds will become reliant upon your help.