Two drakes. No hens. Their behavior seems quite aggressive lately. Not that they can be scary (too cute for that). They run after me when I walk around. Afraid I'll step on one. They "attack" my shoes and shoe laces biting them and tugging hard. If I squat down by them, they bite and tug at my gloves or stick their head up my sleeves, or sometimes they "jump" up my arm. If they are outside of their pen and I go into it, they run it after me attacking my shoes and pant legs. My husband thinks they are being playful, but to me, it seems to be aggression. Also, they LOVE night crawlers, but after I feed them some they act aggressive. Anyone experience this duck behavior? What does it mean? Thanks.