Firts number = 1 = 1 male
Second number = 1 = 1 female
Third number = 0 = 0 juveniles
This is international understanding.
f.e. I have 7 juveniles, not jet sexable, for sale : 0,0,7
If a couple is offered and 3 not sexable juveniles : 1,1,3
greatings Yvan