I checked the bird houses this weekend. The bluebird eggs in house "A" haven't hatched yet. There weren't any other eggs laid yet but there were some more nests. I again found a dead tree swallow - this time in house "D". Made me angry so when I saw a English sparrow sitting on house "C" this morning, I went out and waved it away. I watched and it came back so I walked out and shooed it away again. Did that three more times this morning. Each time the sparrow let me get a little closer before it flew. I considered bringing out something to chuck at it but I'd probably feel bad if I did hit it.