It's more than simply the barring on the tail. The body shape is is too chunky
and the bill is curved in a wren-like fashion. Once you have photographed a
wren, or any species of bird you tend to recognize it at a glance. This wren
looks young and foolish. Young House wrens are paler in colour and have less
detail in their feathers. I hear a House wren in the woodlot across the street
most every morning but it never comes to the edge of the woods next to the
roadway. I have yet to photograph a Marsh wren although I have seen one.
I think that I even spotted a Sedge wren two years ago but I didn't have a camera
with me at the time. Pity, because it was really close.