Yelping from the Sky

Today, while Maggie jogged and I skied, I heard a strange yelping from the north, and realized that it was not only moving, but that it was high overhead. I looked up to see a long arrow of Tundra Swans gliding to the south. The sky was blue with patches of high white clouds. But the birds were low, pure white except for black beaks and backward extended legs and feet. These swans fly with their necks straight out, making precise crosses in the air. They were only visible and audible for a few seconds, but they made my whole day memorable.