Installed a nuc I bought into the hive 3 days ago. Today I noticed this and was wondering if it is pollen and if so why it is being dumped from the hive. Reorganizing or something maybe? If not what do you think it is? The hive has SBB so that is where it is coming out of. The pieces are probably about 1/16th to 1/8th inch diameter and hard and crumbly. The picture is taken from the side of the hive front being to the right as you look at the pic. Stand leg is front leg of the stand. I have not opened the hive to see what they are doing and do not really want to disturb them for another week or so. Figured it best to let them get things going they way they want to.