Thanks for the link, Peggy. I will definitely check it out. My back ground is in business and finance, so my gardening exposure has been passed down from my paternal grandfather, an Applied Botany course in college, and a lot of trial and error. As a result, I knew nothing about the interrelationship of insects, birds, etc. Doug Tallamy's books were a valuable eye-opener for me and I definitely have a lot more to learn.