Mysterious bio-duck sound attributed to the Antarctic minke whale (Balaenoptera bonaerensis), Biology Letters, Published 23 April 2014 DOI: 10.1098/rsbl.2014.0175įor decades, the bio-duck sound has been recorded in the Southern Ocean, but the animal producing it has remained a mystery. One is that they are a primary target of Japanese whalers, the other is because of where they live-a part of the ocean undergoing transformation due to global warming. Research on the minke whales is particularly important for two reasons. The researchers note that solving the mystery is more than fanciful, now that the source is known, researchers can use recording equipment to track their migration, feeding patterns or even the reproduction cycles of the whales, offering the possibility of a whole new research area. Recordings made of this and one other animal revealed that minke whales are the source of the mysterious and strange "bio-duck" sound that is common in the Southern Ocean.
Duck sounds download#
The suction cup tag detaches after a number of hours, then researchers retrieve the tag to download the data. The small green tag attached to this whale records depth, heading, and roll, and also has a microphone that records the sounds made by the animal and other sounds in the environment. One of two minke whales that researchers from Duke University outfitted with a suction cup tag. The recordings were compared to prior recordings of bio-duck sounds made by researchers aboard submarines and were found to match, solving the mystery of the bio-duck sounds. A sensor on one of the whales gave away the secret of bio-duck sounds-capturing the distinctive bio-duck noise, repeating several times as the whale was near the surface. The sensors they used were quite sophisticated, yet small-they capture and record not only sound, but water depth and movements in 360 degrees-plus, they don't cause harm, they're held on by suction cups. Thus it was a bit of a triumph that the team was able to manage to do so. Putting sensors on minke whales is not easy-they're fast and turn on a dime. In this latest effort, the researchers took a direct approach-they attached sensors to the backs of two of the whales and captured data for 24 hour periods. Since that time, many scientists have heard and captured the noises, though until now, no one really knew from whence they came. Those vibrations from your breath going through the straw created that strange duck-like sound that you heard.Reports of seasonal bio-duck sounds have circulated since the 1960's, when they were first reported by personnel aboard submarines. That little triangle that you cut in the straw forced the two pieces of the point to VIBRATE very fast against each other when you blew through the straw. Don't stop there - try cutting the straw different sizes to see how the sound changes, or make another identical straw and add the pointed end of the new straw to the uncut end of the first straw (to make the first straw longer) The sound will be very different, (more like a moose call!) and you will have to blow even harder, but give it a try.
If you still have trouble, try flattening it out some more or cutting the straw in half.ĥ. The smaller you are, the harder it may be to get a good sound - sometimes adults can get more of a sound thanks to their bigger lungs. If all goes well you should hear a somewhat silly sound coming from the straw. Now take a deep breath, put the pointed end of the straw in your mouth and blow hard into the straw. Cut the flattened end of the straw into a point (see below).Ĥ. Use your fingers to press on one end of the straw to flatten it - the flatter the better.Ģ. * Lungs (don't worry you already have them)ġ. * One plastic straw from your kitchen or local fast food restaurant Makes sure you flatten it out really good to make this work, then make sure you parent tip your server well. All you need is that straw in your soda and a pair of scissors.
You can discover this next time you're out at a fancy restaurant. Sound Like a Duck or a Fog Horn! All sounds are created by vibrations.
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