A giraffe says "hum"?

By Taken by fir0002 | flagstaffotos.com.au Canon 20D + Canon 70-200mm f/2.8 L (Own work) [GFDL 1.2 (http://www.gnu.org/licenses/old-licenses/fdl-1.2.html)], via Wikimedia Commons

Researchers at the University of Vienna are studying vocalizations from giraffes. They captured recordings of the animals "humming" during the night at local zoos. Zookeepers were surprised to learn the animals made such noises as they are not heard during the day. Researcher Dr. Angela Stöger remarked to the New Scientist, "I was fascinated, because these signals have a very interesting sound and have a complex acoustic structure." However, it remains to be determined whether the animals are snoring, humming in their sleep, or actually communicating with one another. You can listen to a recording of their nocturnal sounds here.

Sources:

New Scientist

University of Vienna

More like this

Image of honeybee By Fir0002 (Own work) [GFDL 1.2 (http://www.gnu.org/licenses/old-licenses/fdl-1.2.html)], via Wikimedia Commons A new study conducted by researchers at the University of Guelph found that the use of certain pesticides impacts wildflower pollination by bees. According to a quote…
Image of elephant fish by fir0002 | flagstaffotos.com.au Canon 20D + Tamron 28-75mm f/2.8 - Own work, GFDL 1.2, https://commons.wikimedia.org/w/index.php?curid=864471 Seawater contains sulfate concentrations that are nearly 40 times those measured in plasma. Therefore, it is easy to see why fish…
"I have just gone over my comet computations again, and it is humiliating to perceive how very little more I know than I did seven years ago when I first did this kind of work." -Maria Mitchell Well, it's getting close to the end of October, the Moon is waning towards its new phase, and -- at least…
“The great oak of Astronomy has been felled, and we are lost without its shadow.” –Subrahmanyan Chandrasekhar, on the passing of Jan Oort In our Solar System, we have the inner, rocky worlds, an asteroid belt, the gas giants and then the Kuiper belt. Out beyond that, in theory, we have the Oort…