In 1914, malaria was a serious public health threat to the people of San Antonio, Texas. Dr. Charles Campbell figured that the best way to reduce the mosquito population was with bats. So he built this giant roost for bats to live in.
But what do you do if you've got too many bats? Then you need to attract eagles with knives -- as many as possible -- in order to kill off the bats.
Link -via Offbeat Home | Photo: George Grantham Bain Collection
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What joker built this?
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I presume that the cross on top was there to screen out the vampire bats.
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Actually, this is not that bad of an idea. Does not work so great for controlling mosquitos though. Bats go after larger flying insects. Better for controlling moths and certain crops have issues with moths and their larvae. Getting a bat population going can help control things. Also, notice the roosting area has a large open space under it. The idea here was to allow the collection of bat guano for fertilizer.
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