Well, I have made another foray into the marshes of Bennett's Creek. I have been quite unable to come up with ANY shartptailed sparrows. This is the SAME marsh that I was able to count dozens in last winter. The marsh is pretty laid down due to storms - perhaps this has contributed to it. I only saw two sparrows, both unid'd. Didn't seem to be sharptaileds - I would guess Swampies but I just didn't get on them.
I'll post again in about a week.