In the Spring, I hang suet baskets filled with dog hair. It gives birds nesting material. It has deterred the deer from the area's the baskets are hanging. It's not the prettiest garden decor but it's functional. It's important to make sure the donating dog has not been bathed in chemicals that might harm birds. It's fun to watch the birds fly off with faces full of dog hair. Be prepared the baskets empty fast during nest building time.