Duck Quacks Sound Download
Elis Riebow
To make the low-pitched breathy guttural growl or rising bbbuuurrrrrr of the bluebill (similar to the sounds canvasbacks and redheads utter while on the water, along with what can best be described as sharp barks), I use an older J-frame single reed and flutter my tongue while growling into the call.
Originally from Ohio, M.D. Johnson, and his wife/business partner, Julia, spent 18 years in Iowa before relocating to her native Washington state in 2015. A full-time freelance outdoor writer since 1992, Johnson, with the photographic assistance of his wife, has authored and illustrated six full-length books, including three on waterfowl hunting. Today, The Johnsons reside in Wahkiakum County, where they both enjoy a 107-day duck season, salmon fishing, and everything the wonderful Pacific Northwest has to offer. Oh, and if you ask, M.D. will tell you he prefers 16 gauge doubles to anything else.
Acoustic expert Trevor Cox tested the popular myth -- often the subject of television quiz shows and Internet chat rooms -- by first recording Daisy's quack in a special chamber with jagged surfaces that produces no sound reflections.
"Also, a quack is a fading sound. It has a gradual decay, so it's hard to tell the difference between the actual quack and the echo. That's especially true if you haven't previously heard what it sounds like with no reflections."
The winner (so far) of the Most Ludicrous Entry contest is the claim that a duck's quack doesn't echo. Unfortunately, it's also the item we're most frequently asked about. The premise is just silly: a duck's quack (and presumably, of all the sounds known to man, only a duck's quack) has some special sonic property that causes it not to echo. We're not talking about a situation where a landform creates an acoustic shadow (a phenomenon under which even loud sounds can be inaudible to nearby listeners), but the claim that a duck's quack doesn't echo under any conditions.
One of the main problems with such a claim is that the term "a duck's quack" is non-specific. Different species of duck make different sounds, and there are a lot of breeds of duck in the world. And anyone who has spent time around ducks knows that even within the same species of duck, a male's quack can sound nothing like a female's. (Female mallards, for example, make loud honking sounds, but male mallards produce a much softer, rasping sound.) Do all these varied sounds, without exception, fail to produce echoes?
I could dismiss this one merely from personal experience. Although I grew up in suburbia, much of my youth was spent raising various kinds of domesticated animals, particularly ducks and geese. When our ducks got to quacking in unison, I could most assuredly hear the cacophony of sound as it echoed off the stone walls that surrounded our yard and entered my bedroom window. So could neighbors who lived a few hundred feet down the street and frequently called us to complain about the noise. The surprise was not that our ducks' quacks didn't echo, but that they echoed so remarkably well.
There is a saying, "A duck's quack doesn't echo and no one knows the reason why." Hoping to disprove this one slow afternoon at the office, I found myself semiprone on a grassy knoll, pretending to interview a duck named Daisy. Every time she quacked or stretched and opened her wings, camera shutters fluttered like castanets. My colleagues stood close by, unable to contain their laughter. The press had caught wind of our modest attempt to correct the misconception about the supposed non-echoing quack and were doing their best to turn it into an international news event.A few months before the photo shoot with Daisy, Danny McCaul, the laboratory manager at Salford University, had been approached by BBC Radio 2 to find out whether the phrase "a duck's quack doesn't echo" was true or false. Ignoring Danny's careful explanation of why a quack will echo, the factoid was still broadcast. Annoyed that his acoustic prowess had been overlooked, Danny and some of his colleagues, including me, decided we needed to gather scientific evidence to prove the point.
Convincing a farm to lend us a duck and transporting it to the laboratory were probably more time-consuming than the actual experiments. First we placed Daisy in the anechoic chamber and made a baseline measurement of an echo-free quack. The anechoic chamber is an ultrasilent room where sound does not reflect from the walls; it is without echoes, as the name implies. It was important to have a reference sound without echoes; after all, this was a serious piece of science and not a bit of Friday afternoon fun. After a brief comfort break for Daisy, she was carried next door to the reverberation chamber, which sounds like a cathedral with a very long reverberation time, despite being little bigger than a tall classroom. Normally, the chamber is used to test the acoustic absorption of building parts like theater seating or studio carpets. In this room, Daisy's quacks sounded evil and ghostly as they echoed around the room, the noise prompting her to cry out again and again. We had created the ultimate sound effect for a horror movie, provided the film featured a vampire duck.
An echo is a delayed repetition of sound, which for a duck might be caused by a quack reflecting off a cliff. The vampiric cry in the reverberation chamber demonstrated that quacks reflect from surfaces like every other sound. We were not surprised by the result, not least because there are bird species that echolocate, using wall reflections to navigate caves.
But caves and reverberation chambers are not a natural habitat for ducks like Daisy. We were curious to know what happens outdoors. To hear a clear single echo from Daisy, I would need a stretch of water with a large reflecting surface, such as a cliff, nearby. In such a place, sound would travel directly from the duck to my ear, followed shortly by the delayed reflection from the cliff. In the taxonomy of echoes, this is a monosyllabic echo, where there is just time to say one syllable before an echo arrives. But Daisy and I could not be too near the cliff, or my brain would combine the reflection with the quack travelling directly from her beak to my ear, and I would hear only one sound.
I must admit that my field experiments were crude. Though I could not bring Daisy, I did wander around various ponds, canals, and rivers listening to wildfowl. In none of these places could I hear a clear, audible quack separate from the original call. In the end, I came to the conclusion that the phrase should say, "A duck's quack might echo, but it's impossible to hear unless the bird quacks while flying under a bridge."
If you remember, the researchers fitted hives with sensitive accelerometers and recorded the sounds within the hive for two years. Of about 25 colonies monitored, half swarmed during this period, generating 11 prime swarms and 19 casts.
Queen tooting has been observed. The queen presses her thorax tight down against the comb and vibrates her strong thoracic wing muscles. Her wings remain closed. The comb acts as a sounding board, amplifying the sound in the hive (and presumably transmitting the vibrations through the comb as well).
In previous studies, Grooters had shown that replaying the tooting sound to mature virgin queens actively chewing their way out of a queen cell delayed their emergence by several hours. This delay allowed the attendant workers to reseal the cell and obstruct her emergence for several days.
In support of this last suggestion, studies conducted almost half a century ago by Simpson and Greenwood 5 concluded that a 650 Hz artificial piping sound induced swarming in colonies containing a single mobile (i.e. free) virgin queen.
Monty Python also referenced the test in the Witch Logic scene in their 1975 film Monty Python and the Holy Grail, where Sir Bedevere reasons that, since ducks float just as wood floats, and wood burns just as witches burn, then a person who weighs the same as a duck must be a witch.[2]
Vladimir Vapnik, co-inventor of the support-vector machine and a major contributor to the theory of machine learning, uses the duck test as a way to summarize the importance of simple predicates to classify things.[4] During the discussion he often uses the test to illustrate that the concise format of the duck test is a form of intelligence that machines are not capable of producing.
The philosopher Slavoj Žižek has cited the Marx Brothers' rewording of the duck test: "He may look like an idiot and talk like an idiot, but don't let that fool you. He really is an idiot." The humor of this line lies in its violation of an expected opposite.
Suppose you see a bird walking around in a farm yard. This bird has no label that says 'duck'. But the bird certainly looks like a duck. Also, he goes to the pond and you notice that he swims like a duck. Then he opens his beak and quacks like a duck. Well, by this time you have probably reached the conclusion that the bird is a duck, whether he's wearing a label or not.[6]
In a startling blow to one of California's biggest health insurers, the state has revoked the tax-exempt status of Blue Shield of California, forcing the company to pay tens of millions of dollars in back taxes and unleashing a torrent of calls for it to return billions of dollars to customers.The tax board's action 'was an acknowledgment of what Blue Shield was already doing, or not doing,' said Anthony Wright, head of Health Access California, a consumer advocacy group. 'And if it looks like a duck and talks like a duck, it should be taxed like a duck.'[9]
Ducks and Mallard Ducks are critters. As all other critters, they have 5 health, no defense, and are often killed instantly by other enemies or the player. They can usually only spawn in the middle third of the above-ground world, or in areas near an NPC house if water is present. They only appear in pools of water, regardless of their size or if they are naturally generated. They quite frequently make a "quack" sound when nearby.
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