This guy was calling his mate in full pitch (very high decibels which can be heard over long distances). Notice how he is straining his vocal chords. It is the beginning of autumn (monsoon as it is known locally) and I guess they are very active at this time of the year. Pause to catch breath before belting out another song. There was very gusty wind at that time. He was bouncing around like a yoyo buffeted by the wind.
Great shots Sundar, those dark subjects are difficult to expose properly, you did a good job here. Thanks for posting.
Thanks. Very few times I have seen them in close range. They tend to hang out mostly in dense foliage.