The Swallows are Back

For the last few years, I have had a pair of swallows nesting on my front porch.  Earlier this week, I noticed a cat on my front porch, perched on one of the chairs, eager to pounce.  I looked, and there were bird droppings on the floor.  I overturned the chairs and table on the front porch, so the cats do not have purchase to jump up and try to catch the swallows.  I did not see the swallows that day.  But the last few days, I have seen the swallows flying in and out on my front porch.  I suspect they are repairing their nest, which looks a little distressed on one side, but strong elsewhere.  I am so excited to see the swallows.