作者: John Clifford Sutton , Michael Howard D. Hearn Collinson , Peter G. Kevan , Todd Gordon Mason
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摘要: A tray for positioning in an exit path of a bee hive comprises base, entrance end, and end. Spaced apart side walls extend upwardly from the base. The sidewalls generally lengthwise between end plurality posts base are positioned circular cross-section. act as obstacles around which bees must walk to reach