Steven Struyck documented a pair of Greater Racket-tailed Drongos (Dicrurus paradiseus) calling to each other in Penang recently.
Drongos are generally vocal and noisy. They are capable of producing a variety of sounds and these include mimicking calls of other species of birds. They have also been known to even produce man-made sounds like that from chain saws, ringing of bells, whistles, etc.
31st January 2017