Great-horned Owl chicks

A funny thing happened on the way to see the Great-horned Owl chicks at Harrison Hills Park, Allegheny County. I saw one that looked like this:

I've seen them there on and off for about 10 days, and this seemed strange to me. I've never seen one laying on his stomach before. At first I thought he was sick or worse, dead. But when I went back the next day, there they both still were, as fine as ever. It was a bit depressing in that intervening time period. So he was just laying on his stomach, staring down at me.