The chickens will acclimate over time. It's just when the climate takes a sudden change and the fluctuation in temperature is wide that chickens have a hard time and can even go into a state of heat stress. They will adjust to a slow exposure to temperature change, even though they will benefit...
Little black spots on a comb most often are from being pecked by other chickens as the pecking order shifts from time to time. These spots are scabs which will disappear in a week or so as they heal.
Other black spots can be from dry pox. In the past, when I've had a bird with this, I put...
If that's her only symptom, relax, it's probably just due to sudden change in the weather from cool to very warm. Panting is a normal reaction to this. Make sure there's plenty of fresh, cold water to drink.
If panting is accompanied by behavior such as moping immobile off at the edges of the...