AB == Africanized Bee ??? I am just guessing since I am accustomed to seeing AHB.
It will be quite a while before they gain any strength, the bees have to build a nest, the queen has to lay it up and they have to develop and emerge first, then the cluster needs to go through a growing period of a couple of months before they gain any real strength.
If you suspect africanized, exactly why do you suspect it?
TBHs make life much easier for the beekeeper with agressive bees, that's a fact.
Scot Mc Pherson<br />McPherson Family Honey Farms<br />Davenport, IA<br />BeeWiki: <a href=\"http://beewiki.linuxfromscratch.org\" target=\"_blank\">http://beewiki.linuxfromscratch.org</a> <br /><br />Pics:<br /> <a href=\"http://linuxfromscratch.org/~scot/pics/bees/\" target=\"_blank\">http://linuxfromscratch.org/~scot/pics/bees/</a>