Have you ever wondered why at times that old longbeard will gobble at 1 call and not a further? How numerous times have you been sitting in the woods calling to a bird that knows you are there, only to obtain no response?  So you determine to attempt a distinct call and you finally get a response.   The answer why, may well be as easy as the frequency or pitch of the call your using.
A couple of years ago there was an introduction of higher frequency calls towards the marketplace. This was no coincidence. During the mid to late 1990’s several turkey biologists had been beginning to know more about the wild turkeys hearing. Testing revealed that calls within the 12,000 Hz to15,000 Hz ranges received far better responses from the turkeys.  Biologist also located that calls within this range are heard much superior by the turkeys at distance. 
A spectrogram could be the instrument that turkey biologists made use of to measure the Hz of  wild hen turkey calls. Amazingly enough they found that the hen turkey can reach notes up inside the 15,000 Hz range.  These notes had been the located largely when the hen was “cutting” (brief sharp erratic staccato notes, a prevalent call heard throughout the breeding season) and was extremely excited.  With these findings they decided to continue testing 
Not satisfied using the first round of high frequency testing, in 1996 turkey biologists brought the testing to the field.  They utilised calls inside the five,000 Hz,    ten,000 Hz and 15,000 Hz ranges.  Each of the calls were regulated towards the identical decibel output and located that the turkeys responded well no matter whether calling at near and far distances.  Even so they did note that the turkeys responded improved towards the greater frequency calls and once they responded towards the greater frequency, they wouldn’t respond to the lower frequency call again.  Once they heard the high frequency calling which is all they wanted to hear.   
The field testing was carried out over 270 times even though getting more than 90 distinct responses.  The turkey biologists were able to calculate that 39% of the birds responded towards the calls within the 5,000 Hz range, slightly extra than 45% responded towards the calling within the 10,000 Hz range, and an astounding 88% answered the call inside the 15,000 Hz range. 
Shortly soon after biologists reached their conclusions concerning the wild turkeys responding towards the higher frequency sounds, everybody I know, including myself,  stuffed a few these calls into our vests! These calls are high pitched locator calls including crow calls, hawk calls, as well as 1 call that represented a peacock.  The turkey calls that generate the highest frequencies are the pot and peg style calls. The calling surface is usually made of aluminum, glass or some other man created surface.  Couple these type calls having a graphite, plastic, or acrylic strikers and you not only will probably be in a position to obtain the greater pitched calls, you may also be able to run these combinations inside the wet climate. 
A few of the calls I prefer are the Quaker Boy Aluminator, and my new favorite, the Triple Threat.  The Triple threat has three diverse calling surfaces, slate, aluminum, and plexi.  With this one call with I now have surfaces in all 3 Hz ranges.  Matched with some different strikers and I’m prepared to hit the woods operating.  For locators I like to use Quaker Boy Crankin’ Crow, as well as the Hawk Scream.  Both are extremely high pitched and loud, perfectly designed to obtain inside that gobbler’s head.
Just before you hit the spring turkey woods this year stuff a high frequency turkey call and locator call inside your vest to superior your chances of receiving that tight lipped tom to gobble. Hunt secure, hunt hard, and take a child hunting so that he or she can enjoy the outdoors and carry on our way of life. 
When you are an passionate turkey hunter and looking for plenty of information and suggestions on turkey hunting, then visit TurkeyHunting 247.com for plenty of articles and videos on Rio Grande turkeys and how to use turkey calls.