Im trying to figure out which doe will be in heat when, I cant tell which is which. Dates so far have been: July 11,July 30,Aug 4,and Aug 6. Im guessing that the first 2 are one doe and the 2nd two is the other. The only way I know is my Nubian/Alpine mounting the Lamancha. How can I figure out which is which? The cross is always loud and the LM rarely makes any noise so I cant judge by that.