Got some new komorner tumblers

[secuellar]

My uncle breeds all kinds of birds and sales them. He gave me a pair of komorner one boy and one girl that are always together. Ive never had birds as pets but i gotta start somewhere right? I built them a cage myself its 6 1/2 feet tall and 2 by 2/12 ft..is that a big enoug cage? It has 2 platforms an automatic feeder and automatic water dispenser it also has 2 round stick for them to perch on and a box for nesting. What kind of feed can I give them? and can i put other birds with them such as parakeets?
Thank you,
Sarah E. Cuellar