Nyjer Bird Seed - 10lb - BulkNyjer seed is rich in oil and is highly nutritious, and is great energy source for garden birds. This also makes it a great choice for winter feeding. It will give wild birds the high calories that will help store fat to keep them warm, and the lasting energy they need to survive the cold winter season. The high protein count will also benefit the regeneration of feathers when malting throughout the year.