These two male Blackbucks were fighting for the coveted female herd. The one on the left was a challenger while the right one was defending its territory - I knew this since I was at the place and not from this picture.

The Right Blackbuck pushed the left one away until the challengers head was turned completely and he was pinned down. The challenger left the field gracefully, but as if to say - "I will be back" !

This competitive behaviour to please the females is known as "Lekking". Something that I read as not very common in animal kingdom.

Blackbucks are a common species of antelopes found in the bird sanctuary that I visited. They numbered in 100's with the ratio of females outweighing males by a big number.