Ten Chicks is right on. Get that chicken cooled down. If you have a cement pad that is out of the sun (like a garage floor) that you don't mind the mess on, put together a small make-shift pen to put her in, directly on the concrete. Wetting her down first will help. Make sure the floor is...
You are right - It's either a rooster or you will have a dominant hen. Watch her - she may become a wonderful brooder (assuming you have another rooster). -Uncle Eric
If you are giving them treats only on the weekends, they don't have a pattern established. Try saving your treats in the fridge so you can provide them every day. Eventually they will get excited seeing you, expecting a treat every time you show up. As for your feed waste, they are getting...
This could be one of a few things:
1) She may actually be a rooster.
2) Many Hens, while growing and coming up on their laying time, will become aggressive, usually taking it out on the closest male (no pun intended). Unfortunately, she will eventually learn (and sometimes painfully) who...