I seem to recall reading an article several years ago in ABJ about a research
project on some islands off the coast of southern California.  There is a
population of feral european honey bees that were supplanting the native
solitary bess, etc.  The plan was to remove all the feral bees and see how
the natives responded.  I believe the islands were Federal property.  This is
the opposite of the original question.
 
 Has anyone heard any follow-up on this?
 
Cheers,
David Morris