I have frame feeders in my 2 nucs. I've never used them before. I went to re-fill today as they were completely empty and the feeder is full of hungry bees. How do you get the bees out?[/QUOTE]
When you continue that way, your bees will be all out because they swarm.
You just spoil you hives. There are no hungry bees.
If you have a small colony 5 frames and one frame is full of food, it is good.
Don't give more. They get food from nature like Poly Hive says.
They draw combs with honey and they need not help in that job.
********
Take the feeders off in the evening and bees fly to home.
If they get nectar outside, they will not come back to lick the sugar.
*********
If my nucs have too much stored food, I take extra food away. I never feed the nmucs. I take from another hive food frame and give to the nuc - if necessary. Feeding starts often robbing and a small nuc cannot protect itself.
I have guite much 2-3 frames mating nucs.
.
.