Mine started calling at around 7 months. However, I didn't get any clutches until they reached about 11 months of age. I've only heard the male once, and it was only by a small margin of chance. I had the glass top open while I was dusting some ff's, and I heard a very faint buzz. I peeked around the side of the viv and saw his throat inflating. Even with no t.v. or stereo turned on, it was very hard to hear. There's no way I would have heard him had the top of the tank been closed. They're nothing like pumilio, that's for sure!
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Randy
Lawrence, Kansas
1.1 Azureus
1.1 Cobalt
1.1 Fantasticus
2.2 Bastimentos Pumilio
2.5 Bri Bri Pumilio
0.0.3 Mysteriosus