2008 - Volume #32, Issue #1, Page #40
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Electronic Door Tucks Poultry In At Night
Chickens instinctively know what time to go to bed. With Electronic Doorkeeper, no one has to be there to shut the door behind them.
    The system operates on a light sensor or timer, or both, says Nick Breckenridge, a technician at Foy's Pigeon Supplies in Beaver Falls, Pennsylvania. The Doorkeeper, built in G..........


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2008 - Volume #32, Issue #1