Ken, I hate to pick nits here, but...
In MY room, squealing like a pig has repeatedly proven to be superior to any fowl, both in terms of dispersion and bass extension.
I'd say that barnyard animal vocalization calibration techniques are highly dependent upon boundary interactions. I have a friend who *swears* that bleating like a goat is the ONLY way to go.
Now, I don't want to start a flame war about whether it's better to calibrate with mammal or bird sounds, because we all know we've gone down that road too many times.
