My experience has told me that Leghorns are naturally curious and very smart. They fly well and are skinny. Many of them are well known as escape artists. They have all the tools necessary and really don't care to be confined despite what the breeders would tell you.I have a Leghorn that keeps finding her way out of her pen. After she gets out she tries to figure out how to get back in. I haven't found how she is getting out. Some years ago I had two Leghorns, Houdini-1 and Houdini-2. No matter what coop and pen I put them in they would always find a way out, escape artists. They got out one too many times and one just disappeared and the other only feathers behind the coop. Probably either a fox or coyote. The birds have nice large shady pens and plenty of food, water and treats.