Bats devour moths, mosquitoes, and more
While most insect-feeding birds are diurnal, feeding on insects that are active in daylight, bats have perfected a feeding strategy that is targeted at night-flying insects. Moths and mosquitoes may be their mainstay, but they also feast on insects ranging from gnats to large flying beetles. Bats will consume from a quarter to half their body weight in insects each night. This means that an average colony of any common species of bat may eliminate more than 100 tons of insects in one season.
Studies conducted in Kansas and Canada over the last few years have shown that bat populations can effectively control corn rootworm moths, thus reducing and even eliminating the need for agricultural insecticide applications in some areas. If bats can effectively control insects on such a large scale, just imagine what they can do in your garden.
Bats do more than help with insect control. Their excrement is a prized organic fertilizer. Bat guano typically contains 10 percent nitrogen, 3 percent phosphorus, and 1 percent potassium, and it has no fillers, as other types of fertilizer often do. This natural plant enhancer benefits flowers, ornamentals, vegetables, and herbs. It is also extremely long-lasting in most types of soil.