Well, I thought all was good...
I inspected on October 13th feeding sugar water syrup.
I have 2 hives. The larger one is photoed below:
All was good with bees all over the top bars:
I put plugs in the center hole in each, and reduced the entrance from 2 1/2 inch to 1 inch. my smaller hive is photoed here:
It dipped to as cold as 28 degrees...
Then yesterday 11-28-13 I go to put sugar on the top bars:
I see almost virtually no bees. A significant population reduction.
My smaller hive (in the blue box) On 10-13-13:
And now it has still loads of bees:
This is how I am doing my over winter feeding with 2 sheets of newspaper and sugar:
Since I am giving both hives the same care and on the same days I don't understand what may be happening..
Also when I fed on 10-13-13 the larger hive (the one that colapsed) finished all 96 ounces of sugar water..
The smaller hive finished about 75% and there was dead bees on top of the floats.
Anybody experienced this? I wonder of I soffocated them when I reduced the entrance and put a cork in their top hole.