a few months ago as I drove the Richmond connector (a highway near Vancouver) to deliver something to a customer. It was a typical overcast day, and I was caught up in the busy traffic and thinking about work deadlines etc.. I happened to look to the left just off the highway and saw a pair of bald eagles come together in the air, grasp their talons and plummet down in a spiral. THey were maybe 100-150 feet up when they started and fell only for a second or two. Just as it looked as if they would smash into the ground, (maybe 10 feet above) they split off into two directions.
Needless to say I was amazed, and easily would have missed it. and felt so lucky to have witnessed it. I looked around at the rest of the traffic and everyone seemed to be on their cell phones and oblivious. Certainly it made my day and and ranks right up there with seeing grey whales while kayaking at Clayoquot sound. And it made me stop and think of so much more that is around us.
Eagles and other raptors I believe do this when mating, Ive seen it on the occasional nature show but never in person. It was a privilege.