I purchased 6 four day old goslings two of them are emdens and the other four were supposed to be african greys. Unfortunately, only one of the four is an african grey the other three (?). I was looking for a mate for my adult female african grey and wanted it to be hand raised. Is there an easy way to tell whether or not the one I have is a male or female or should I take it to the vet? Also I have a pair of adult emdens and now I believe I have a pair of young ones. Is there a sure way to tell on these two?