Great advice given above on the clucks and purrs, so I won't comment on them. I will comment on the purrs with the mouth call. I think the purr is probably one of the hardest calls to make with a mouth call. I have tried and tried and tried with a mouth call, but I just can not do it. I can do just fine with the other calls but for some crazy odd reason, the purr just doesn't click with me either. I will tell you to keep practicing and hopefully it will click with you.