Who is happiest in the world/ Kids story

A crow lived in the forest. One day he saw a swan.
“This swan is so white,” he thought, “and I am so black. This swan must be the happiest bird in the world.”

He expressed his thoughts to the swan.
The swan replied, “I was feeling that I was the happiest bird around until I saw a parrot, which has two colors. I think the parrot is the happiest bird in creation.”
The crow approached the parrot. The parrot explained, “I lived a very happy life until I saw a peacock. I have only two colors, but the peacock has multiple colors.”

The crow then visited a peacock.
“Dear peacock,” the crow said, “you are so beautiful. Everyone like and adore you. When people see me, they immediately shoo me away. I think you are the happiest bird on the planet.”

The peacock replied, “I always thought that I was the most beautiful and happy bird on the planet. But because of my beauty, I am entrapped. I have realized that the crow is the only bird not kept in a cage. So for past few days, I have been thinking that if I were a crow, I could happily roam everywhere.”
Moral:
Learn to be happy in what you have instead of looking at what you don't have.