My 3 month old Dark Brahma "Hero" has been making some strange whistling sounds. I first noticed it last saturday when I picked her up she was trying to make her normal cooing/ clucking sounds but they were coming out very faint, and there was a sort of whistling sound too. She seemed to be fine otherwise, eating and drinking and running around like the others. Also she doesn't seem to have any discharge from her eyes or nose. Then I noticed that she had some blood in her stool and so I called the store where I got her, and they recomended I worm with wazine 7. So I did that, but she doesn't seem to be getting better. She still is acting normal but there is a less of a sound, perhaps not even a soft whistle when she talks (though she is making other sounds somehow or other) I can't really tell if she's having trouble breathing, maybe!??!?!? She pants through out the day, but all of my chickens are doing that now since it's 95+ degrees here in Texas, so it's hard to tell weather she's doing it more than normal. Please help, I'm fairly new to all this and I have no idea what to do!