Yellow belly?

Hi i want to give me opinions on this couple ,this is yellow belly? Two clutches with a total of 9 eggs and 0 ivory , it may be possible?
female:
http://img833.imageshack.us/img833/3261/img0197r.jpghttp://img708.imageshack.us/img708/5163/img0199thd.jpghttp://img189.imageshack.us/img189/1005/img0198ro.jpg

male;
http://img546.imageshack.us/img546/4961/img0200om.jpg
http://img231.imageshack.us/img231/4/img0204xi.jpg
http://img819.imageshack.us/img819/1794/img0203xc.jpg

The male I'm 100% certain is a yellow belly, and I'd say the female is too. IMO they're both yellow bellies, and maybe you just didn't hit the odds to get an ivory. The only way you'll know is if you try the pairing again.