thanks, all!

oddly enough, my two get along fine most of the time. i can leave them out together, they happily share perches, food and toys without a problem, and they have even climbed up on drink cups together before, lol. while i do put them in a cage together on occasion, i wouldn't trust them to be housed together permanently. also, lentil HATES all the other budgies and the 'tiel. it may be stokes' laid back lazy perch potato personality that makes it work, as he is a good bit more sedate than the other, american, budgies...