Thirsty Crow

One A thirsty crow flew to and fro in search of water but it could not find water any. At last he got tired and sat on in a tree. Beneath the tree it saw a pitcher. The crew crow flew to it and sat on the pitcher it. There was some water at it’s the bottom. Its bottom, but its beak could not reach the water it. Eventually it was his hit upon a nice plan. There was a heap of pebbles nearby. It nearby, so it picked up the pebbles one by one and dropped them into the pitcher. Thus, the water reached the neck of the pitcher, so the crow quenched its thirst and flew away.

A Thirsty Crow

One thirsty crow flew to and fro in search of water but found none. it could not find water. At last he got it was tired and sat on a tree branch. Beneath the tree It saw a pitcher under the tree. The crow flew down and found that it contained water.  However, at on the pitcher. There was some water at its bottom. its beak could not reach the water level. Eventually it was his upon a nice plan. There was a heap of pebbles nearby and the crow hit upon a good plan. It picked up the pebbles one by one and dropped them into the pitcher to raise the water level. Thus the water reached the neck of the pitcher, the crow after quenching its thirst,  and it flew away.

You must not write so much obvious detail into the story.  Takes away the imagination of the reader.  Not only this, they makes the story dull like following a cooking recipe.  A good story leaves room for imagination.  Also the way you wrote may not make the story plausible.  When you say, "some water at the bottom".  This infers that there is very little water in the container.  No matter how much pebbles get thrown it, the level raised would be of no use.

The Thirsty Crow

One thirsty crow flew to and fro in search of water, but it could not find water. At last he got tired and sat on a tree. Beneath the tree, the crow saw a pitcher. The crow flew and sat on the pitcher. There was some water at the bottom. It's beak could not reach the water. Eventually, the crow came up with a good plan. There was a heap of pebbles nearby. It picked up pebbles, one by one, and dropped them into the pitcher, thus raising the water to the neck of the pitcher. The crow quench it's thirst and flew away.