Wrens Using Bird Bottle For a Second Time

So it will be twice.  The Carolina Wrens (same pair?) are back in the Colonial Williamsburg Bird Bottle hanging over our garage door.  I've finally seen evidence that there is a new nest in progress and that birds are moving in and out of the bottle.  That's great news because I have had on- and off- results at this unusual nesting structure for five years and this would be the first time (fingers crossed) two active nests occurred in one season.  But we have a ways to go before I can make great claims.  For now, it's going to be fun to watch and I hope the wrens are successful!