Only 4?

It appears that not all five owlets survived :( .
They are just now getting big enough to count their heads, and I'm only counting 4. You may have noticed that they have looked like one big pile of fuzz until now.
I'm not sure what happened to the fifth owlet, but suspect that there wasn't enogh food to go around. There were a few rainy nights when it seemed the hunting was not so good.
Hopefully the remaining 4 will be ok.