We have a mixed flock of 7 hens and 1 roo that are 1-3 years old. The roo has been doing his 'husbandly duties' with atleast 3 of the hens, that we know of. Yesterday I noticed one of the other hens mounting another. They are both definitely hens and sisters to boot. Both of these hens have not been 'serviced' by the roo that we are aware of. We thought one roo would be enough for this many hens, but do we really need to have a second roo and flock? We don't really want nor do we have the facilities for a second flock or roo. Of all the hens, only one is laying eggs at the moment. What's going on and how do we fix it? PS, we know that sometimes hens can crow & such like a rooster when there isn't one around. But, but, but...really??? Mounting?