Sylvan Lake, BC is where this Lesser Yellowlegs had stopped for a quick top up before heading south. I always have problems identifying the two species of Yellowlegs with size being the best......but only when they are standing together!. The other things to look at when looking at Greater vs Lesser is that greater have a longer bill in relation to the head which is slightly upturned at the tip. They also look a little daintier. Click on the link for comparison.