For those who’re out for a stroll within the American West, you may hear
a high-pitched, bloodcurdling cry that sounds just like the shrieks
of the ghostly Ringwraiths from the Lord of the Rings.
However it’s not the howl of a vengeful soul that you just’re
listening to—as an alternative, it’s the mating name of a wapiti, or male elk.
For years, scientists puzzled how such big-bodied animals
might make such high-pitched calls. Now, they might have an
reply: After analyzing recordings of the elk bugling calls,
researchers found that they
actually comprise two parts—the high-pitched shrieking that
can attain frequencies above 2000 hertz (heard within the video
above) and a simultaneous, lower-pitched name round 145 hertz,
a extra typical frequency for an elk-sized animal. They then
dissected a useless elk and located a throat construction that may
permit the animal to “whistle” by means of its nostrils to create
the upper frequency noise, they write at present within the Journal
of Experimental Biology. The scientists suspect that this
versatility permits the 315-kilogram animal to create deeper,
extra aggressive noises in fight conditions together with
higher-pitched noises that may carry far over the open
landscapes of the West to draw mates.
Source : http://www.sciencemag.org/news/2016/04/video-these-elk-sound-ringwraiths