In recent years, experts have discovered more far-reaching effects of vitamin D deficiency. In 2009, researchers from the University of Missouri-Columbia found that insufficient levels of vitamin D are associated with inflammation, an immune system response that can cause fluid buildup and swelling.
1 of 19 Facebook Pinterest. Feeding birds comes naturally when you grow trees and shrubs with nutritious berries. The plants you'll find in this slideshow do double duty: They attract birds and create a beautiful display with their flowers, fall colors, and fruits adding sparkle to your landscape. 2 of 19 Facebook Pinterest.
Wild birds (the small songbirds) eat insects, grubs, beetles, pine cone seeds, weed and flower seeds, dandelion greens, and then there are the offerings that humans provide: suet & seed, peanut butter & seed, beef fat (only during very cold weather - or it goes rancid), rendered fat mixed with pellets & seed.