I have been culturing black worms in duckweed for 7 years. I have come to the point where I have figured out how to breed and culture them for about a penny a pound. Instead of buying it for 45 bucks a pound. I had a very greedy duck break into my duckweed black worm culture and eat to her heart's content until I found her. So, Now I'm wondering....... Can I feed the ducks with the blackworms? Is she going to get sick? I've checked her poop for the worms and I don't see em wiggling in there. I want to put her back in with the other ducks but I am a bit worried. A blackworm is normally to raise young fish. I've feed Daphnia to baby ducks before. Not black worms though.