About Jatayu, king of birds

Jatayu and Sampati were the sons of Aruna, son of Vinate, and Shyene was their mother. In Adi Parva of Mahabharata, there is a mention of these two brothers challenging each other on their speed in flying. When they had flown a very long height in the sky, Jatayu started fumbling due to the heat and Sampati tried to cover his younger brother from the heat with his wings. By that time, Jatayu had lost consciousness and he fell in Dandakaranya. Sampati too could not withstand the heat as his wings were burnt and he fell on the shores of South sea, where a sage called Nishakara was doing penance. Seeing the bird on the verge of death, the sage treated the bird. The bird recovered. However, since that moment, the two brothers did not meet each other at all. Jatayu was unaware of where his elder brother was till death as he died while trying to prevent Ravana from escaping with Seetha. Sampati saved the Vanaras, including Hanumantha, from committing suicide by providing them with the information about the whereabouts of Ravana, Lanka and Seetha. Jatayu also died only after informing Rama and Lakshmana about Ravana. What a great service these two birds rendered to the Lord in their dying moments?