Apparently the fuss the chickens were making this morning was due to one of them laying her first egg:

I’m very surprised to see that it’s almost exactly the same size and weight (55g) as a large egg from the store. The last time I had chickens, I remember them starting off with undersized and less sturdy eggs–the shells were softer, and the eggs were about half size. Could we have just missed that phase with these chickens? I don’t remember seeing any evidence of eggs, broken or otherwise, in the coop before today. Maybe we just have these chickens on a better diet than the ones we had when I was a kid.

In any case, hooray! They’re finally starting to earn their keep.