She eventually took all four. They were born on the second and the third, so nearly a week old.
Their first outside excursion was an adventure. They're in the broody cage attached to another coop. The other birds have been interested but basically ignored them except for complaining that they couldn't get to the food.
So far, so good. I let them out, and this time she led her chicks out for the first time. One of the young cockerels immediately went after the chicks. Mama got between and it was just like watching a rooster fight. She wouldn't let him get to the chicks and he wasn't going to allow her to put him in his place.
Chaos ensued, chicks scattered and crying, Mama absolutely determined and Jr. Birdman angry as all getout. I had to fight him off with a stick, then I had to coax the chicks back to Mama (they were behind the coop where she couldn't get to them) get Jr. Birdman out of the broody coop and coax Mama back into it.
Not sure what to do about him. I have another slated for freezer camp this weekend, and it wouldn't cause any problems to do two instead of one. He's been challenging me for a while, just hasn't gotten up the nerve to actually do anything.
He's also the one that keeps trying to mount the 12 week old chicks. The others basically ignore them, a point in the favor of the senior (still a cockerel, but over six months old while these guys are sixteen weeks) who will also be dinner once I have a well-behaved replacement.
But I cannot tolerate a roo that attacks chicks or broodies.