一只帕多瓦种的母鸡,在靠近帕尔马城的一所农庄里出生长大,它有个毛病:生出的鸡蛋的蛋壳很容易碎。原因在于其它的母鸡都吃小石子和石灰微粒,所以它们生下的鸡蛋壳都结实;而它只吃小麦、高梁和玉米粒,或者吃小虫子,它吃的虫子有玫瑰色、黑色或其它各种颜色的,它从来不吃小石子 A Padova breed of hens grew up in a farm near Parma city. It had a problem: the egg shells of the eggs produced were very fragile. The reason is that other hens eat pebbles and lime particles, so their egg shells are strong; and it only eats wheat, sorghum and corn kernels, or eats small bugs. The insects they eat have rose, black or In other colors, it never eats pebbles.