Cock and Peacock

Cock and peacock represent 

1. nada and 
2. bindu. 

when it spreads its magnificent plumes into a full-blown circular form 

1. The peacock displays divine shape of Omkara , while
2. the cock proclaims loudly the Pranava sound OM. 

Surapadma in his previous life had been Sura and Padma, two bhootas, who had prayed to Subrahmanya to become his flag and vehicle, the cock and peacock.

http://6tri.blogspot.com/search/label/Surapadman