well firstly, those mynahs (what they are called) will be
extremely pissed off when caught and will bite any human that goes
close. I know cuz I got pecked by one before. they will not eat
whatever you feed it.
you can take a cardboard box or whatever thing that can act as a
cage and support it with a tree branch, tie the branch to a string
and place bird feed under the box, when the bird goes there to eat
you pull the string and the box comes down and the bird will get
trapped. this is one method.
if you want a bird that will eat food then catch a pigeon, they are
much easier to catch, I've caught pigeons with my bare hands before
because I am uber |337.
