Tree Swallow on PVC house

Did my outside tasks today.  This morning Indy and I did our first check for the year on the bird houses.  I've yet to see a bluebird but the tree swallows are back.  Three houses had partial nests which surprised me - seemed a little early to be that far along.  Usually the birds spend a couple of weeks checking out sites and leaving a few dried stems of grass.  Did find another three houses w/ these 'place holders' in them.   This afternoon cleaned the outside of the windows. Congratulated myself on building a one-story home - no standing on ladders to wash windows.   Got the broom in the garage and swept the deck.  I'd hoped that the little rabbit 'pellets' would disappear w/ the snow but they still peppered the deck.  For such a simple task it was a little surreal.  There was a very stiff wind and when I swept the pellets out from under deck furniture they would swirl and jump w/ the wind.  At one point had a whole bunch of them rolling toward me and I reflexively jumped out of the way to let them pass and careen on off the edge.  Tomorrow temps will fall below freezing again but hopefully no more snow.