Will wild birds eat sunflower seeds that are over a year old?

Wild birds may eat sunflower seeds that are over a year old, but their willingness to do so depends on the seeds' storage conditions. If the seeds have been stored in a cool, dry place and remain free from mold or pests, they may still be viable and appealing to birds. However, if the seeds show signs of spoilage or have a rancid smell, birds are unlikely to consume them. It's best to check the seeds before offering them to ensure they are still good for feeding.