If, like us, you've always thought that telling a Baird's from a White-rumped Sandpiper was nigh on impossible and only for the experts, then this blog may help you. Although we haven't seen these species in all plumages (notably not juvenile Baird's), we think that now we have cobbled together enough experience and knowledge to tell the difference, so, here's how we do it.http://www.waderquest.org/2014/06/separating-bairds-and-white-rumped.html