After paging through a typical field guide to the birds of North America, most people become intimidated by the many hundreds of bird species that are pictured. When one considers the myriad different plumages for juvenile, immature and adult birds, males versus females, and seasonal plumage differences, the possibilities increase into the thousands. Suddenly, a pleasant and relaxing morning spent identifying a few birds becomes stressful, daunting, impossible. In fact, faced with such a task, it is easier to give up before even getting started. This is where Pete Dunne's Essential Field…