packing peanuts or extra chicks they add for warmth are roo's and breed depends on what they have i suppose...last august i got 10 barred rock roos as packing peanuts but i seen people on here who have ordered from ideal this year so far have gotten white leghorn roos but that might change at any timemisbhaven, so sorry to hear of your DOA's. My post office has told me it is a law that they call you as soon as they arrive. I ordered from Ideal after down sizing my order from 18 to 12 I received 21. (I now know what 'warmer' chicks means.) I lost 3 within a day and a 4th died just today. They are 3 weeks old. I have no idea what happened today. I previously ordered ducks from Ideal with one DOA. All ducks flourishing very well. I'm happy with Ideal but dieing to know if the warmer chicks are boys or girls and what breed they might be. I wish you luck on your next purchase.