Not long ago, someone posted a study on upper entrances taken from the
American Bee Journal in 1985.
In the study, the lower entrance was sealed and a conical drone escape
installed on the brood box. The upper entrance was above a queen excluder.
The url is:
http://www.beesource.com/pov/hayes/abjaug85.htm
Does anyone have the dimensions of a drone escape?
Jay Mowat
WILLOW CREEK
RR2 Erin, Ontario N0B 1T0
phone: 519-833-7238 fax: 519-833-0347
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