Cameron,
> Another part of my project involves passive recording by setting up a
> digital recorder with a powerful battery supply that will continuously
> record for weeks at a time. The objective is to look at vocalization
> behaviors i.e. when they call most frequently, vocal repertoires, etc.
> My problem with this is that I don't know what microphone set up will
> be best for making quality recordings. As I mentioned above great gray
> owls call at a very low frequency range, but they are also not very
> loud. I fear that it may be too difficult to make recordings without
> amplifying the signals.
if you are looking to use acoustic amplification like a parabola you will g=
et an increase in directionality, Which is fine when you are there and can =
direct the rig at the owl, but not for passive recording. Unless you can id=
entify somewhere the owl is likely to call from I would guess most of the t=
ime your mic maximum gain axis won't be in the direction of your target.
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