. Commercial poultry raising;. Poultry. 158 COMMERCIAL POULTRY RAISING inward end, which releases the cleat " D," and the door flies open. This may surprise the fowls at first, but they soon become ac- customed to it. In fact, they will actually learn to operate it, just as they learn to operate an automatic feeder. Thus, Mr. Poultryman, you can finish your nap in peace; let Biddy do this early-rising work. It would be impracticable to make the adjustment of the. {Courtesy C. L. Opperman) Fig. in.—Serviceable, inexpensive colony house, constructed of rough lumber covered with patent
. Commercial poultry raising;. Poultry. 158 COMMERCIAL POULTRY RAISING inward end, which releases the cleat " D," and the door flies open. This may surprise the fowls at first, but they soon become ac- customed to it. In fact, they will actually learn to operate it, just as they learn to operate an automatic feeder. Thus, Mr. Poultryman, you can finish your nap in peace; let Biddy do this early-rising work. It would be impracticable to make the adjustment of the. {Courtesy C. L. Opperman) Fig. in.—Serviceable, inexpensive colony house, constructed of rough lumber covered with patent roofing paper. door so fine that the weight of a month-old chick could depress the platform; but this is not necessary. Chicks move about in crowds, especially when they are trying to get out of a building. Very good, the crowd passes across the trigger platform—and the trap is sprung! Liberty! . In connection with the early-rising door it may be desirable to make the exit as near proof against raiders as possible, even in the daytime. Rats do most of their marauding at night, under. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Roberts, Howard Armstrong, 1885- [from old catalog]. Philadelphia, D. McKay
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1920
