Hen acting strange

[aart]

Tonight she was no where to be seen in the coop when I went to lock them away
Found her trying to sleep in some random bush
This is very strange behaviour does anyone know if she might be dying?

In the bush, or under it?

 

[FC16]

She’s still picking on the younger ones and is sleeping in the boxes. The constant clucking and the squatting has now stopped.

Today I got this random dark brown small egg. Could it have game from her? She lays daily and is usually a very light brown (standard) colour. I don’t have any dark egg layers

Or could it be the first egg of my young Silkie (she’s about 23 weeks old)?