most of my observation here at the boundaries of the africanize bees in Texas concerning feral hives and some of the question I have in this regards closely approximate that of richard drutchas.  knowing exactly of the geography of Richard's location beyond the similarities in humidity and temperature both here and  there are pretty much surround by commercial beekeeping operation.  I have SUSPECTED given how these operation operate via management and early feeding these may in fact overwhelm any feral population of honeybees.   I seem to recall some bee studies done out of my alma mater The University of Florida concerning drone population in and around managed bee keeping operation which seem to suggest the same thing.  I can't say I have ever directly seen any usurpation here but certainly if you rear any number of queens a lot of time returning and newly mated queens could be easily mistaken for usurpation.

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