That happens with the in ground WIRED electric fences. My sister had a German Shepherd that chased squirrels. I think they had about 2 acres. He would blow "through" the fence after a squirrel and they would find him sitting outside it when they got home from work. I BELIEVE the wireless fences only strike on the way out, not on the way back in. I don't know how they do that. There are some that just form a circle and others that you can form a shape so as to exclude them from some areas while allowing access to others. The latter type need to be "trained" with special signal flags so the system can determine the shape and "memorize it". Some of the circle ones are portable, once your dog is trained to the warning signal, you can take them and the fence to visit family for example and keep the dog in a defined space.
GPs, like many Livestock Guardian Dogs, have a bigger "mental" territory due to their breeding form many centuries to stay with the flock they tend. As I read it, some will travel a mile no problem so they DO need to be contained. Of course ALL dogs need to be contained unless maybe your house is in the middle of 1,000 acres.
Blooie! You are going to kill your chicks if you put them outside before they are a year old! And no heat lamp???
Dues paid
If they NEVER come out, the cave is probably cooler than it should be.
Oh my! Shades of Scout. Glad I didn't read until all the installments were in. I'm NOT going to guess a gender for that chick, you know how well I did with Scout. :/
When I got my first chicks, I made a temporary (OK it is still there) a cheesy "run" about 18' x 18' with one side being the barn wall (because that is how much old chicken wire and old plastic T-posts I found in the barn). At first we let them out only into that space. Then when we were outside watching chicken TV we opened the "gate" so they could explore. They slowly expanded their range as they got older but stuck together pretty much their entire first summer and fall.
They won't go very far at first, EVERYTHING is new and scary. You can let them out as long as they want to stay out if you are willing to hang out and find "outdoor stuff" to do in the general area. I would be more afraid of aerial predators picking them off than them getting to the fence line and going farther. At least for awhile.
Yep, let the bigs out for the day and shut them out, then let the littles explore the area. More than likely the "risk" time with bigs and littles is around food and treats. One of my Cubalayas still chases the "chicks" (1 year old this coming June) from BOSS and scratch even though they could hang her up by her tail feathers if they wanted to given she is 2/3 their size.
They NEED draft free. They should be fine when fully feathered, usually by 4 weeks, without heat as long as they can stay out of the weather and that includes wind in the area they sleep (or hide from breezes).
COULD have??

But whatever one is comfortable with is the BEST thing for them.
Absolutely!
NO mistakes are allowed in the Broodie Brigade. EVERYTHING has to be done to perfection and the carefully engineered specifications of a MHP setup

THOUSANDS of chicks could have been killed by your carelessness
OK, lashing over, back to your regularly scheduled activities.
Nope, none of my chicks were vaccinated and I never bought medicated feed. I do think that ramp looks too steep and the cleats are too far apart. The chicks don't exactly climb uphill real well. And put yourself in their position. The coop door is how high off the ground? Figure out how many "chick heights" that is then apply the ratio to a 1 year old child. Would the CHILD want to go down a steep ramp without "handholds" they can reach?
Oh my, you ARE suffering! See my post about a temporary outdoor run above. Takes about 10 minutes to put up and easy to move whenever you like.