Crystal Chicken
Chirping
Theres an article here somewhere on how to find them. I am not sure where it is though.I've heard about checking the pelvic bone but I haven't actually done this with mine! I'd place my fingers below the vent yah?
If you place your hand in the space below their vent with your pointer finger closest to the vent your finger will either land on or just below the pin bones so if you push your hand upwards towards the vent you should feel them sticking out on either side. To me it feels like the back of their legs for whatever reason, but it's their pelvis.