I have just acquired an 8 year old emu, I was told it was a male. I soon started to read more and more about these birds and that males grunt and females boom. My emu make a drumming noise when I'm close almost like its nervous or scared sometimes, then make a noise we can hear in the house it sounds like someone with a car stereo with the base turned up. I told the women I thought it was a female because of the noise it makes, she says that the vet said female emus are aggressive and both sexes make similar sounds? She also is saying that the owner before her had it DNA tested and it was with a female emu that laid eggs. Can a male emu make booming noises? I have never heard any grunting. Help?