They grow up so fast

 The new girls are 14 weeks old and growing bigger and a little less fearful every day.

Lady Mary: They make too much noise.

Eleven has established herself as the troublemaker of the group.

Perhaps it's a middle-child thing.

 They spend much of their day watching the rest of the flock run free in the yard.

 Me: What do you think, Ten? Should I open the gate for a little while 

and see if you can all hold your own against the big girls?

She almost lost her head in excitement.

So I let them out. They didn't go far on their first adventure.

Ten and Twelve ran back to the poultry palace after a few minutes, 

while Eleven tried to squeeze through the fence into the corral. 

There will be no more adventures until they are bigger.