Had you robbed them not long before?
No. Didn't rob at all this year.
Is there any kind of flow?
I thought Goldenrod was going but because of how dry it has been, I don't think it developed to well. The goldenrod at our tree line is pretty pathetic and I haven't seen bees in it for weeks. If there is a flow, it probably isn't much due to the dryness.
Are they being robbed by another hive?
No signs of it that I've noticed. I have another hive that I will be inspecting today (these hives are neighbors). This hive had a lot more honey in it than the one currently starving, so I would suspect they are running low also. If not, that may or may not suggest robbing (if it's this hive that is robbing the other).
If there is NO pollen (a rarity this time of year) then I'd put some substitute or, preferably, real pollen or pollen/substitute 50/50, on.
I was thinking about that.
I don't know what is going on with the pollen right now. We had some heavy rain for two and a half days. Is it possible for it to get washed off the flowers? I noticed bees coming into the hive with half a load of pollen (it was obvious they weren't fully loaded), but there's not a whole lot in stores. I just ordered some Bee-Pro pollen substitute. Should be here tomorrow. I need to get these ladies strong again so they make it through the winter. I think we have a couple weeks yet that their situation will improve. We are still having 80+ degree days. Nights aren't too shabby for the most part.