I have two black turkeys, one male & one female and two solid whites, also one male & one female. They are about 7 months old but have not started laying yet. For the past week or so, the black female has been acting funny. She started squatting down a lot and acts like she is too heave to get up. She waddles when she does get up. I thought she might be getting ready to lay but she just keeps setting down more while the others run around and into her when I feed them. Been feeding them 18% all flock pellets with some cracked corn or hen scratch. Any one have an idea why she may be having a problem standing? I'm guessing she is around 20 pounds in weight. She is about the same weight as the white hen but both Toms are probably 5 to 8 pounds heavier. ??