Interesting report
Where do you live? How far north have they migrated?
I’ve pm’d you more specific location information. Here, I’ll just say that the location is a little north, but well east of the colony found along the northern Arkansas state line, back in 2007. However, this is the only instance of them in the area that I know of, so, the question is how they got there. Also, from a little research I’ve done today, I believe these are hybridized bees: They are decidedly more aggressive than the usual European variety whose hives I come across from time to time, but not wildly so.
Excellent article, here:
http://www.adkinsbeeremoval.com/africanized-honey-bee.php#17
It appears that the African bees are “evolving” (or at least adapting) as their range expands, becoming less aggressive, but also somewhat better adapted to cooler climates.