Assertion: cockatiel's egg | /r/CapableOf | lay in single females
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Source sentences:
text: The most common causes of egg binding are a very young female bird (under 18 months of age) laying her first egg, lack of calcium in the diet, an all seed diet which lacks vitamins and minerals necessary for the production of normal eggs and healthy muscles, by allowing birds to breed all year long and chronic egg laying in single females.