[EBB Sightings] Great Horned Owl

Although body size usually is correlated with the frequency of bird
vocalizations, with larger birds making lower-pitched sounds, that is
not the case with owls.  Instead, the larger-bodied female utters a
higher-frequency sound because she has a smaller vocal apparatus
(syrinx and bronchi) than the male does.

Jeff Davis
Prather, CA

>---- Original Message ----
>From: jlangewis at sbcglobal.net
>To: sightings at diabloaudubon.com
>Subject: Re: [EBB Sightings] Great Horned Owl
>Date: Thu, 13 Sep 2007 14:06:50 -0700
>>That's what I understand to be the case.  The female is also larger
>than the
>>male, so it makes sense.
>>
>>Johan Langewis
>>Oakland
>>
>>
>>----- Original Message ----- 
>>From: "jimm" 
>>To: "MaryLou Mull" ;
>
>>Sent: Thursday, September 13, 2007 12:22 PM
>>Subject: Re: [EBB Sightings] Great Horned Owl
>>
>>
>>> Back to this discussion. I have always heard the male call was
>higher than
>>> female??
>>>
>>> Jimm Edgar
>>> ----- Original Message ----- 
>>> From: "MaryLou Mull" 
>>> To: 
>>> Sent: Wednesday, September 12, 2007 6:46 PM
>>> Subject: [EBB Sightings] Great Horned Owl
>>>
>>>
>>> > Last night (Tuesday 9/11) about 10 pm we heard the
>>> > call of a male Great Horned Owl and --in the
>>> > distance--the slightly higher pitched response of a
>>> > female. Wow---usually don't hear them until
>>> > mid-October out here in the Refugio Valley area of
>>> > Hercules!
>>> > Sweet tweets--and hoots, MaryLou Mull, Hercules
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