I'm kinda stunned/surprised/in shock.... Well I guess I wasn't just expecting this to happen quite yet, after all their just my babies and sister and brother to top it all off. Jack and Jill are about 15 weeks old. Golden Cascade babies, Jack was abandond/left outside of the nest almost lifeless until we found him and crested/gently rubbed and massaged him all over while talking to him. Jill was an egg with a pip still in the nest but soon hatched the next day in the incubator. ~Last night Jack & Jill were swimming and i noticed Jack on Jills back trying to mate(and no i really don't think they were playing but i would like to think that.) lol So this just caught me off guard... But is this a normal thing in animals, them breeding/mating even if their brother and sister? Help.. this is still new to me. Thanks, ~Julie~