Savannah Sparrows are becoming more common. I first saw a bunch of them at Fernhill Wetlands a couple of weeks ago. I saw this one yesterday at TRNWR. They are harder to shoot than Song Sparrows as they will either hide in the grass until you get too close and then fly away or will continue to move along the ground ahead on the trail, never allowing you to get too close. This last behavior results in them often having their back towards you. That tends to be annoying when you are trying to take their picture.