4 gliders 3 r young 250 + cage

We purchased a pair of gliders 1 year ago. Girl had a male Joey at Christmas 2014. She had another 2 joeys after that around March. My ex-boyfriend (he has left) was the one that took care of them and held them so I really don't know if the other 2 gliders are males or females. I have attached pics but they are hard to photograph all at once! The cage is about 2.5' x 4.5' x 1.5'. all toys included.