I have several (20+) greek mullein plants growing out front. Lately the smallest downy woodpecker has been feeding on the seeds. Just now there were 4 of them, what a treat.
Oh how cool! I wonder if the birds eat common mullein seeds. That might be why I only ever get a few mullein plants to come up each year.
My neighbor used to have a goldfish pond. She noticed her fish kept disappearing. One morning she saw a Great Blue Heron fishing in her little pond. I have more squirrels than birds using my tub water gardens.