This month, I was able to get a better look at long-billed and short-billed dowitchers. I consider that a great feat for me. The two species are very similar in appearance – AllAboutBirds.org notes you tell them apart by the short-billed dowitcher having a shorter bill (although there can be an overlap in bill size) and a slimmer underbelly. The best way to tell them apart is by their call.