Also, there was yet another one this morning that was on the verge of death, so I pulled it out and have been trying to nurse it back to health. I've been pretty unsuccesful and it's acting just like the others have before they die. They'll roll their heads around and around with eyes closed for a while, then they'll pull their heads back (and if I try to pull them back down they'll lift them back again), then it almost seems as though their heads get stuck back like that and I can't move them down. They'll start opening their mouths almost like they're trying to peep, but no noise is coming out, then they'll die.