Thanks for all of the replies. The coop is about 8 foot wide and 7 foot deep. The nesting box that they sleep in is about 30 inches wide and deep a little taller since I raised the roof. There are currently two roosting boards inside - I am planning to change & re-arrange them tomorrow. I have two separate feeding buckets - each have 3 feeding stations in them. They only go into their coop area to sleep and eat. They free range during the day. I did have a pen around the coop that was about 15 foot square, but I just moved this fence and now their 'pen' area is about 50 foot square.
JUST TONIGHT A LIGHT BULB CAME ON! I think it was after I raised the roof that Rudy the rooster started kicking the pullets out of the roost box! I think - the older two have decided they want to roost instead of sleeping in the laying box - which they had always chosen to do. (the laying box attached to the roost box is not being used for laying - they have another box for laying). Anyway - I am thinking this might be part of the problem? The two roosts currently in the box are not placed well - I am going to fix this tomorrow and see how things go.
I have no idea on the age of the rooster. The hen was a tiny chick when the neighbor brought them home around Easter 2017. The pullets appeared very young when they showed up in the coop around 1 Oct 17.
I too have wondered if one of these pullets are a cockerel - but I have posted pics a couple of places and everyone thinks they are both pullets. Here are some pictures of our flock. OH YES - Based on recommendations here, I did just change everyone to an all flock feed and Oyster shells are available.
Here is Rudy. Pic taken 1 Dec 17.
Here is Rudy and Tootie
Here are the pullets - I think the picture posted earlier is more current (this week). This pic was 1 Dec 17
Just because they are so darn cute! Here are our babies that are still staying inside the house. 2 Cream Legbars' and one Buff Orpington.
I will try to get some pics of Rudy's comb and foot tomorrow. THANK YOU ALL