If you keep a very close eye on them and the carrier is large enough the
trip to the vet should be ok. As far a getting them together, don't push
it. Put on on each shoulder and go about your homework, watch tv, etc
and pet them at the same time. This can be a trick, but it can be done.
I also suggest taking them into the shower with you, put them on the
shower rod until you are ready and then bring them down, one on each hand
to enjoy the shower with you. Put some of the favorite treats on a plate
and pretend to eat, they will usually try to join you and maybe they will
be able to find some common ground that way. The key is patience and
don't expect your older bird to come around immediately. It took a
couple of weeks for my birds to decide they will accept eachother. Give
them lots of toys if you are gone for long periods and they will be
caged, this will help reduce agression towards eachother.
TRACI IN MOSCOW