For the last two days these big, loud, beautiful woodpeckers, called the Northern Flickers, have been making a racket around our house. Last night they kept going at it till late. I watched them in a colorful sunset, chasing each other, screaming. Then sitting high up in the big poplars. I suppose doing their spring courtship. Two of them together would sit for a minute or so and then bob their head at each other, like saying:"Ye! we're going for it.". After approx. 5 minutes of this they would chase each other again from tree to tree, with at least one other Flicker, joining in.