I have two hens that are suddenly yawning all the time. I am not sue if that is normal ir if it is something I should be concerned about. It has been very rainy and cold here and then jumps up to 70 degrees so the weather could possibly be a factor. Can anyone tell me what this is?I feed 18% laying crumbles mixed with oyster shells and diatamicious earth and they free range most of day in my back yard. they get scratch as well
