A trifling body of chunky, dove-like birds deliberately pulsates around an opening in a park in suburban Sydney. Instantly a feral cat leaps out from some adjacent brush carefully misplacing a flock member’s feather plume wreathed in head with a paw. In an alarmed huff, the birds spread their wings and the air permeates with a sequence of creaking whistles. Prodigiously these clamors do not emanate from the bird’s mouth but from the fluttering of their wings. The crested pigeons (Ocyphaps lophotes) have been acknowledged for their thunderous flying.
However, a new study has disclosed how this whistling sound is made and for what is this peculiar sound made for. The whistling wings work as an alarm or a sign that danger is approaching and its anything unlike known in the birds so far. Crested pigeons are established in every part of Mainland Australia in extensive domain. They are acknowledged for both, the dissipated spire of feathers aloft their heads, and the cyclical, metallic whistling sound their wings emanate when flapping, a distinguishing feature for which they are often known as “whistle-winged pigeons.”
The sound efficacy makes for absolutely sensational exit, but until now science was unaware if the whistling had a distinct ramification or it was just an unconventional consequence of flight physics. If the whistling has progressed to literally function something? What would that be? Deflecting predators? Disconcerting them? Or was it a communication code to be shared with other crested pigeons?