As per the Legends, eight sons took birth from Brahma's mind ( Manasa Putras) and they performed strict penance for Lord Siva to obtain Saaroopa Padavi. But they desired Saayujya when Lord Siva appeared before them. Angered Siva, cursed them to become eagles because of the blender committed to desiring the boon. They all pleaded the Lord for their ignorance, Siva told them that they would be relieved of their sins if they were born as eagles, two by two in each Yuga and worshipped Vedagiri.
Three Yugas has already passed; In this Kaliyuga, the sages , Busha and Vidatha by name, are said to worship the Lord in the guise of birds. Two birds visit temple daily at 11 am. and feed at the hands of a Desikar. Birds are fed with Chakara Pongal (Jaggery bath) and ghee.
As per the folklore, these birds take the bath in the Ganges in the morning, take their food at Tirukalukundram at noon, Worship Lord Siva at Rameswaram in the evening and reach Chidambaram at nightfall.