Could be an improper (as in, too high) incubation temperature, like Shadowguy already said. Could be an inbreeding depression thing. Could be both. Nutrition, maybe. Could be anything.
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I'm Dutch. Somebody shoot me. 
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Could be an improper (as in, too high) incubation temperature, like Shadowguy already said. Could be an inbreeding depression thing. Could be both. Nutrition, maybe. Could be anything.
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I'm Dutch. Somebody shoot me. 
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