These guys were on the ground on the side walk when I found them. They were two dark colored ants and they were big. These may have been a size bigger than the harvester ants but they were not harvesters but some other kind of ant all together. These two were kind of at odds with each other which was weird. One would act like it was trying to attack the other one which was very odd. Normally you see only cooperation in a colony of ants but these two were clearly having some sort of disagreement. They didn't start to seriously hurt each other they would just nudge each other and kind of bump each other but before anything could get heated up they would break up and then go there separate ways but then go back to playing bumper ants until they broke off for good. This is the weirdest ant behavior I have seen. These things are not normally at odds with in a single colony only when they are fighting an enemy colony. This was kind of baffling maybe one of you have another theory on this behavior?