Ok, I am building a secure place to lock my chickies up at night, since my pen is more on the side of a chicken tractor than a secure pen. We have loads of opposum here at the very least, one mama last year that ate EVERYTHING she could find, real pain in the neck! I am planning on getting a trap, but still... Anyhow, my question is...how do you make a hen door (my pen is only gonna be 3 foot high) that will be secure that I can open and shut from outside the pen..even tho the door is INSIDE the pen, and I will be outside. I am thinking a long rod with eyehooks or some such thing, something that will be easy for my 82 year old Mom, who gets up at the crack of dawn, to let them out. So any suggestions on something I can configure thats fairly simple, but easy? Right now I am in planning stages so ...give me ideas. I am going to leave the house open with secure hardware cloth on one side, also on the bottom with deep nesting, and one window in back for ventilation, The one wire side will be the side that has the door, so will need to cut a "door" in the wire. (Thats for the summer, late July and August in Nebraska occasionally reach 103 to 105). Then close it up good and tight with a floor I can slide in, etc. for the winter. Place of extremes here, have to adapt! Thanks all, and I hope my question was clear!