A thirsty crow and a jar with little water

Once upon a time, a crow became very thirsty. It was summer and the weather was very hot. There was little water in that place. The crow flew here and there looking for water. But it could not find water anywhere. It seems that it was about to die for the thirst of water. But it did not lose heart.The crow continued its search and found a pitcher to drink water. But there was a little water at the bottom of the pitcher. The crow tried to drink but failed. The water level was too far for the crow’s beak to reach. It tried to find out a good plan. At once it hit upon a plan. It picked up stones one by one and dropped them into the pitcher. After dropping a number of stones, the water level in the jar roses high enough to reach. Then, the crow drank water. Thus the crow saved his life by the use of his wisdom.