Pollinators such as butterflies and bees have been on the decline in recent years, but the U.S. Army Corps of Engineers Kansas City District is actively working to increase their numbers.
Monarch butterfly populations have decreased by 90 percent due to loss of habitat and nectar sources. Milkweed, the sole food source for monarch butterfly larvae, has diminished drastically in the United States due to mowing and herbicide use, especially along roadways and agricultural land.