I think they are sexually dimorphic. The rings on the neck for the male appear around 1 year. They usually are good talkers, as least that what I have been led to believe. But of course the best way to teach them to talk is to talk to them....a lot! good luck have fun.
Oh and go on youtube to see this:http://www.youtube.com/watch?v=iB52iP2a_MY
sooo cute!!
