We saw two different families of trumpeter swans in Yellowstone, but due to distance and moving vehicles I only got a photo of one of the adults. They were beautiful, and it was nice to see four signets in each family, almost fully grown but still grey on top.
We saw bighorn sheep on the top of a ridge, but they were quite far away. Although I could see them well with the scope, they were too far away for a photo. This one, with extensive digital zoom, is a bit fuzzy and not very good - you can more or less see animal legs. But, they're sheep.