You may see Dark-eyed Juncos in the summer, but come fall, many more - those that have been nesting in the mountains or farther north - arrive to spend the winter. These juncos often visit birdfeeders for winter feasting. Dark-eyed Juncos forage on the ground. The flash of white tail-feathers when one is alarmed alerts other members of the flock, and is also part of the courtship display.