I usually shift the last honey-super front an inch, to leave an
opening across the front of the hive.
        Of course remains an opening across the rear of the hive of 1 inch,
I close it for avoids water entrance when rains with a table. When rear
upper entrace is open, bees use both upper entrances.
        I have 20 hives.  All them have upper entrances and bottom entrances
sometimes wide.  Near half of my hives have no floor at all.
        Bees use different entrances according traditions of colonies. Some
of them use 80% upper entrace, other 20%.  The percent is relatively stable
for each colony.
        So far, all fine.  We are near winter and the weather is benign.
 
 
 
        CARLOS APARICIO
 
        SANTA ANA BEACH
 
        CANELONES   -  URUGUAY  
 
        35º  SOUTH