A Lesser Debate

Some debate at work about the identity of this and a similar bird both photographed at Spring Valley Wildlife Area. My vote is Solitary Sandpiper - versus the alternate opinion is Lesser Yellowlegs - there were no other sandpipers, only 8" in size and greenish legs.

Solitary Sandpiper Nikon D7000 ISO 500 600mm f/7.1 1/1000 sec