Inspired partly by Nanci's eagle cam post (for another, see http://wdfw.wa.gov/wildwatch/eaglecam/) and partly by a thread I once saw on BikeForums:

On our rides on the Sammamish River Trail, we see Great Blue Herons, bald eagles, various hawks, bufflehead and merganser ducks, kingfishers, coots, mallards of course, cormorants, the occasional river otter and babies, and lately an osprey. What do you guys see?

(Another favorite BikeForums thread, by the way, was "What's the biggest bug you ever ate?" As one who rides breathing through her mouth often, I'm sure that thread will be relevant to me at some point).