Bird Seed - Cardinal BlendAttract Canadas favourite bird to your backyard with our cardinal blend. This is a simple mix of black oil sunflower and safflower. Cardinals prefer to eat on a platform feeder and ideally near the ground. Place the feeder near cedar hedges or a close escape route which will help them feel safe. Cardinals tend to feed in routine patterns so do not let the feeder go empty once they have started to feed at your feeder.