I got 2 emu's from a local guy here. He didn't know the sex of them nor sure of the age. I've had them for almost four weeks. One of them I hear make a grunt/growl noise alot the other maybe 2x. I thought that the one might have been a female (with less noise), this one chases my female 'Quilla' and acts aggressive to her and my other female 'Sara Faye'. BUT today the one I thought might be a female tried to mount the one I was sure was a male(lots of grunting/growling noise). It didn't appear that anything happened the one on bottom jumped up. Do 2 males ever do this or does a female ever try to do the mounting? I think they are young 12-18 months. Thanks!