Well.... I would like swallows too. But... They don't need a McMansion! The pond I expanded last July started getting wood ducks in to roost every evening shortly after. Not sure why they didn't use it before. Either it was too small for them to feel comfortable there, or there were too many trees to negotiate around getting in and out. I had up to about 50 coming in every evening until about the third week of September... Then... Gone. The increase in bird traffic at the expanded pond is incredible. Cedar waxwings by the dozens feeding on bug hatches over the ponds every evening. Kingfishers taking fatheads. Turkeys feeding in the clover around it. Great blue herons. (Grrrrrr) 4 mature bald eagles. Red tail hawks patrolling the new edges. It's quite a show, and I love watching it.