Hello, 6 of my hens are/were speckled sussex. Three of them have never developed a red comb, wattles, or ear lobes. Early this week the 1st one died. Today I found a second one dead. These girls acted healthy. They had a good body weight and appetite. They showed no signs of sickness, they ran around with the rest of the flock scratching around for snacks. I still have one more pale hen. She also acts fine, She has a great body weight. All of my chickens are 24 weeks old. Does anyone have any idea whats going on? They have always been pale.