There's a lot of species I've never seen on the World Series of Birding. Even birds we happen to get most years, we often get them by call or song and never take the time to try and actually see them. One luxury during scouting is I have a little bit more time and sometimes get lucky and see something rare. This male Kentucky Warbler was singing his head off in Bevan WMA and I actually had a nice look (and time for a quick pic) at him. I've missed this relatively rare bird on only one WSB in my 23 years of doing the event, but never got it by sight.