Your right. I spoke to soon.
The roar, or as I was taught it, the "booming" is generated by the
wing feathers and not the voice. As frogs do respond to sounds, low
vibrations, and proximity I could see that they may shut up when a
boom is done near or over them.
Rich
--- In Lew Proudfoot
<> wrote:
> No, I was echoing a previous statement that the frogs make sounds
simultaneously with other sounds to lessen the chances they could be
picked out individually - that is, I wsa citing another instance of
similar behaviour. I have hard the roaring sound in many types of
flight. What did you mean by "mechanical sound?" Aren't all sounds
mechanical? Or did you mean in contrast to vocalisation, like the
wing sounds made by Mourning Dove?
>
> Rich Peet <> wrote:The roar is a mechanical sound as
it dives down over its mate to
> impress her. I would not think that the nighthawk is able to time
its
> pull out from the dive to go with the frogs.
>
> Is anyone here able to distinguish a Common from a Lessor by sound?
I
> recorded some nighthawks in southern Texas and would love for them
to
> turn out to be the species I don't have.
>
> Rich
>
> --- In Lew Proudfoot
> <> wrote:
> > I have a fascinating recording of Common Nighthawk at dawn. The
> Nighthawk has a peculiar "peent" nasal sound , and then about once a
> minute a sound like a roaring lion. Very disconcerting the first
time
> you hear it. The interesting thing is that on this recording, the
> frogs are clearly synchronized with this roaring sound. I don't
know
> how this might have evolved, since Nighthawks are insectivores, but
on
> this recording at least I was able to convince myself this was not a
> coincidence.
> >
> > Neville Recording <> wrote:The simple song of the
> Brown-headed Cowbird has a frequency range of about 11000 Hertz.
This
> bird used to be the Buffalo Bird and had to project its song above
the
> noise of the herd and the winds of the grasslands.
> > John Neville
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > "Microphones are not ears,
> > Loudspeakers are not birds,
> > A listening room is not nature."
> > Klas Strandberg
> >
> >
> >
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>
> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
>
>
>
> SPONSORED LINKS
> Science kits Science education Science kit for kid Natural sound
Recording technique My first science kit
>
> ---------------------------------
> YAHOO! GROUPS LINKS
>
>
> Visit your group "naturerecordists" on the web.
>=20=20
> To unsubscribe from this group, send an email to:
>
>=20=20
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
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