I messaged a bit more with the girl who has the duck and she said she tried selenium in her water once and it made her way worse, so she got nervous and didn't try it again. She's been adding the other supplements to water as well. I'm wondering if the duck isn't really getting the proper dosage of the vitamins since they're in her water. I don't have high hopes of the duck eating scrambled eggs...just based on my own girls who don't like to try new things they don't already love....so I think I would like to try the selenium again. I offered to take her. She's got the poor thing all alone in a metal tub in a shed. She posted a video and the little one doesn't look terrible. I'll let you know what happens.