No, there is no light in the coup, my guess is it about 5x7.. Possibly a bit larger (it was already here when I moved into the house so didn't buy it myself ) I'll have to measure it, it is supposed to be able to house around 10-12 chickens I think... I dont think it is big enough to put a light in it.. And I'd be worried about the light causing fire being that it's not very high.. (I wouldn't have a place to plug it into anyway.) although maybe I could find another fire safe heat source if need be? My other option would be to house them all in the shed with a few adjustments (which is like a small barn anyway) I was previously used as a woodworking shed..So it's quite large and has electricity, has lighting and enough space to install a heat lamp. I could just make some adjustments to make it more coop-like. I just don't know if my older hens would be willing to go in there since they are so accustomed to their coop and obviously have their routine.. It'd be great if I could get them in there for the winter because they'd have plenty more space to move around on days when it's too cold and snowy to let them out... The babies have made themselves at home in it though... I just figured once they integrate with the adults, they'll just follow them back into the coop and learn the routine from them. I only have two bantams.. The rest are regular size Easter Egger mixes and a Delaware hen.. The two bantams I have (and the regular buff polish) are only about 3 months old and not of laying age yet... Any suggestions?