I'm relatively new with comes to chicken deaths and I'm a bit concerned because my two duckwing's have passed within days of each other. Buddy our 3 year old was having great difficulty laying an egg took It took her two days, and one morning I found her with a broken egg. She seemed fine for a day then died. Her duckwing friend who's just a year old was then picked on by our other chickens ( silkies) and was lost without Biddy. Last night she was shaking under a bush so I bought her in for the night. Her comb and wattle was pale ..... This AM she's dead. Should I be worried about my other chickens?