So the Cockatiels are now moved out of my bedroom and are now downstairs.It will take time for them to be comfortable down there and they are now ready for bed and I put a blanket on the cage to keep them warm.Its just me and Mango now upstairs and I hope he will bond to me now that there is no distractions.He now has to sit on his own cage when out no Cockatiels cage to perch on lol.Mango is ok with the change and is his happy little self.And no there is a lot more room in my bedroom.This is a great New Start.

It's so great that you were able to carry out this solution. I look forward to hearing how it is going.

Also where the Cockatiels is its mouse proof so no mouses going in their cage anymore and Mango's cage bars are too small for a mouse to fit through.

It seems like everything is working out for the best!

Yep it is