Plastron View (Males are more concave. Females have a slight concave when older)

Tail View (Males have a long and thick tail. Females have a long and skinny tail)

Face View (Males have very dark grey or black faces. Females can still have a dusky appearance on their beaks. The rest of the females faces are peach to yellow. Males eyes are dark brown and females are still dark, but yellow or orange on the outside of the eye.