Greater flamingos (Phoenicopterus roseus) are one of migratory birds to Sri Lanka mainly in north and north central coastal lines. I used a drone in very high in the sky with zero disturbance to the flock to capture their behaviour in a lagoon, which got separated to dark and light green caused by stalking of the flock, gave me this perfect natural history moment, which otherwise human eye cannot see. Human beings are great in their own eyes, but are not much in the eyes of nature or birds, I guess.