New to ducks. Long story short. We adopted friendly 5 Yo drake a few months ago. Adopted 2 females for him a 1-2 months ago. 1 hen was killed by a coon a few weeks ago. Since then, he fans his tail, head down and charges me when I walk away. He never makes contact, just charges and back away. Is this something that will get worse? Or that I should be concerned about? How can I correct this behavior? I’ve been searching for adult hens with no success for months (was lucky to come across the 2 hens). Still seeking more hens asap! We r building a pond when the yard dries up this summer.