My question is how to tell if foragers are returning with a full crop of nectar. I’m in Vermont and the only thing flowering is silver maples. The bees are foraging actively and bringing in maple pollen but I don’t know how much nectar they’re finding. The hives are pretty light and it would help me know if I need to feed them, but it’s also something I wonder about in general. Are there signs at the hive entrance of returning foragers being full? I’ve heard of full bees “landing heavy” but never known what exactly to look for. Any tips would be appreciated.