Purchased 3 red sex links yesterday at tractor supply. Thats what they told me they were anyway. One of them just lays around and doesn't do much, whereas the other 2 are crazy doing normal things like scratching and running around. The lazy one does eat and drink and doesn't appear wounded in anyway. Could it be that it is just lazy or could there be something wrong? The guy told me they were 4 days old. Any help or suggestions would be awesome! Thanks in advance!