genders

Hey guys I was wondering if I could get your best guess on the gender of my cockatiel Nico. I've had several conflicting opinions about this. Nico is a seven month old whiteface. The markings make me think Nico is a girl because the tail feathers are barred (I have been noticing a lot of them...

I'm getting 2 four week old cockatiels on Monday. The breeder told me they're both female, but I don't think she had them DNA sexed, so I'm not sure. As far as I can tell, both parents are split pied, the mama is cinnamon and the dad is a normal grey split lutino. I know he's split lutino...