I got five new adult silkies two weeks ago. It seems one's crop never goes down and is huge, she isn't as active (it's not hard, it seems full of air and I can feel food at the bottom), the rooster has a watery left eye, and another girl has developed a congested sounding cough/sneeze/hack... the other two are acting normal. I don't know what to do? I've never had these issues with chickens before. Can I put antibiotics in their community water for all of them to drink or just vitamins? I understand the impacted crop issue and will take the food and water away tonight to see if it goes down. But for the watery eyed rooster and the other girl, I just don't know?? Thanks for any help. I know I sound like a worried mom and I am!!!