Our first visit to Mud Lake lasted just over an hour. We started out at the ridge, where the sun was just hitting the highest branches of the trees. The warmth of the sun stirs the insects into activity, which then attracts all sorts of insectivores looking for food. We did see a good number of birds in the tree tops, including a couple of Nashville and Cape May Warblers, several Tennessee and Yellow-rumped Warblers, and at least three Eastern Phoebes. Warbling Vireos were still singing, and a couple of Red-eyed Vireos were foraging low enough in the trees to identify them without hearing their familiar song.