Very nice sunrise run this morning, 64 degrees, clear & dry, light breeze.  If I time my early runs just right, it's middle of the night quiet when I start & as I run the sky lightens & the birds wake so that by the finish, the sky's all pink & orange & the birds are in their morning uproar.  Sunrise is a major event in the life of a bird.  It's a very good way to start the day.