Birdcalls at dawn and dusk

Having lived for more than 15 years in urban Delhi and Chennai, it is a different experience to hear birds from the trees around my campus residence at ICRISAT. Raji, my wife, hates the 5 am cuckoo though. After perching on the tree next to our bedroom window, he starts his alarm call early in the morning - with every coo getting louder and shriller.
Here's the villain.



And below is his mate.