I was trying to get shots of a Black-bellied Plover one morning, patiently waiting for the bird to come my way when this bird flew in and landed nearby. As it flew in and I saw the white rump, at first glance I assumed it was a yellowlegs but closer inspection revealed it to be this Wilson's Phalarope. I believe this bird is a juvenile, they're actually a little more colourful than the adults at this time of the year. August 27, Mattthew's Lake.
If you're wondering, I lost all interest in the Black-belllied Plover and never did get a shot of that bird.