More wildlife

Right after I posted the dawn pic, I took Scooby to "pump and dump" and, as I came back in the house, saw these two spectators, one lying down, the other standing. They seemed quite calm.

Yesterday afternoon, as we were making the bed after washing linens, I saw a movement out of the corner of my eye and saw the rears of deers bounding away ... they must have been not more than 20 feet away from the bedroom window.

Strange thing happened when we stopped by Summit Lake (a reservoir of about 40 acres) on our photo trek. A small section near the shore had been shoveled for ice skating. I tested it and the ice creaked; cracks were showing in the cleared section. As we stood there, I  became aware of a persistent, slightly varying, hum ... like piston-engine planes going over pretty high up. As I listened more, the sound was punctuated randomly by cracking sounds. As near as I can figure out, the sounds appear to have been coming from the ice in the "lake," vibrating and cracking as it warmed up in the morning sun. Have any readers experienced this phenomenon? Is there a better explanation? TV