3 would be best, when we went and got females for our drake we got 3 and it has worked out great, he knows these girls are his and rarely goes after the other girls even though there are 7 more which belong to 2 other drakes. Now if the younger drake would understand which girls are his, he wants them all.If I may ask a question as well, from what I am learning here, I wanted to get two females and one drake should I go for three females?