Lord Hanuman, son of Vayu (wind God) and Anjana, was very powerful. There are different versions of how he was born. One is that on Ramanavami, when Rishyashringa performed yagna, divine nectar which contained the seed of Lord Shiva was given to the three wives of King Dasharatha, the King of Ayodhya.
After consuming it, Ram, Lakshman, Bharat, and Shatrughna were born to them. But one portion of the nectar was carried away by a large bird into the sky. However, Vayu took that portion away from the bird
and brought it to Anjana. She drank it and Lord Hanuman was born.
Picture Credit : Google