At 01:07 PM 11/9/02 -0600, you wrote:
>Dear fellow recordists,
>
>I am at La Selva Biological Station in Costa Rica right now, and I'm in URGENT
>need of recordings for the three species of Pygmy-Owls (Least, G.
>minutissimum; Andean, G. jardinii; and Ferruginous, G. brasilianum). This is
>for a 5-day resarch project on mobbing to be started as soon as tomorrow
>(gasp!) if possible. It came as a bit of a surprise that there are no
>recordings of Costa Rican birds I can easily access here. I'm wondering if
>anyone happens to have a short recording (enough to make a looped tape) of the
>three species that you can e-mail to me? OTS may be able to pay you if you
>require compensation. The calls are preferably recorded in Costa Rica but
>anywhere in Central America is fine. Alternatively, can anyone possibly make a
>short recording from a CD for me?
>
>Please contact me privately if you can help. Thanks!!!
>
>Cheers,
>
>Wayne Hsu
Wayne:
The AOU accepted taxonomy of the Pygmy Owls has changed during the last
decade, so that the species for Costa Rica are now considered a bit
differently. The change will not affect vocalization recordings much if
they were recorded in C.R., in that the splits affect the relations of the
three owls with respect to other (new) species elsewhere in the neo-tropics.
Prior to the 1998 7th edition, the AOU agreed with the split of the Least
Pygmy Owl, Glaucidium minutissimum) into three South American species, plus
two in Mexico, and changed the name of the Costa Rican birds to
Central American Pygmy Owl, G. griseiceps.
Later, in the 42nd supplement, the Andean Pygmy Owl was spilt, the form
occurring in Costa Rica being found to be more closely related to the
Northern, G. gnoma, it is now called:
Costa Rican Pygmy Owl, G. costaricanum.
I make these point only to caution you that, should you be using recordings
from elsewhere for these two species, they may well be of birds are now
considered to be of a different species.
So, to summarize the C. R. species:
Ferruginous stays the same, Glauciduim brazilianum
Andean is now Costa Rican, G. costaricanum, and
Least is now Central American, G. griseiceps.
Ferruginous and Central American Pygmy Owls have sounds on EnjoyBirds, but
neither was recorded in C.R. -- both were recorded in Belize.
Ferruginous is 3 per second, 1200 Hz, deliberate pulses
Central American is hurried, 4 per second, about 1400 Hz, more run together
sounding.
best regards,
Marty Michener
MIST Software Associates
PO Box 269, Hollis, NH 03049
EnjoyBirds - software that migrates with you. Now shipping.
________________________________________________________________________
________________________________________________________________________
>From Tue Mar 8 18:22:58 2005
Message: 8
Date: Mon, 11 Nov 2002 00:43:45 -0500
From: Walter Knapp <>
Subject: Re: Sennheiser MKH 110
J. Young wrote:
> Well I will keep you posted on how I make out with information from the
> company.
> This is such a promising piece of equipment, I'd hate to have to give up on
> it. But I'd
> also hate to damage it too. My electrical background is that of a tinker,
> perhaps not
> strong enough for this project. Thank goodness I only have one of these
> things to worry
> about, stereo would really do me in. There is a blessing to being deaf in one
> ear, mono
> is as complicated as I need.
It's really pretty simple. The mic is not all that delicate, probably
tougher than modern ones in some ways. It's a little scary when you
first throw the switch, but then it just works. There is no reason to
give up.
The safe way is to set up the power supply, measure voltages and then
connect the mic and power it up. What I did the first time was calculate
the resistance to give it 8 volts once it provided the load and set that
starting value in the trimpots. Then I turned the power on with the
voltmeter monitoring the voltage, and dialed up the voltage with the
trimpot to the 8.8 volts I'd chosen for the full charge voltage. I have
run the voltage up a few tenths above 9 volts, and as far down as 4
volts. Other than signal falling off below 6 volts the mics have no
problem with that.
Other than the problem with shielding, two mics is no worse than one. My
SASS has two independent sections for the two mics. Only the battery is
fully in common.
Walt
________________________________________________________________________
________________________________________________________________________
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
|