We are new to chickens this spring. Built a fly-in coop after stumbling across this and one other mention on another website. Can't declare success yet, as our chickens just moved in a week ago, but so far so good. It's a large (8' x 8') coop on stilts. The bottom of the chicken door is just over 4' off the ground. All 9 of our birds (8 hens and 1 rooster) easily jump/fly in from right below the door. They don't have any sort of pedestal to launch from. For now, we close the door every night, and maybe we always will. In order to leave it open at night, I think I would need to clad the T1-11 plywood siding in sheet metal to prevent raccoons or mink from climbing in. If I do that, then I think our only predator threat will be hawk and owl. As our chickens free range, the hawk is a risk anyways, so no big change there.
On the topic of moving chickens to a new coop, I'd read on a lot of forums that it's best to lock them in the new coop for a week or some period of time. We didn't do that, and I think it's unnecessary. We moved them from a horse stall in a barn, and it went something like this:
Day 1: Put half of them in the coop for ~30 minutes in the afternoon.
Placed the all in the new coop by hand in the evening.
Day 2: Back to free-ranging.
2 hens visited during the afternoon to lay eggs.
(We planned to finish the coop before any eggs arrived, but
project was behind schedule and over budget. Eggs began arriving about 3 days before the coop was done).
Worked hard to round them up and put them in the new coop for evening. Had to let the last 2 into the old horse stall to catch the and put in new coop.
Day 3: Provided a wood ramp. Caught hens and placed on the ramp near the door. They went willingly. Rooster had to be forced. 2 or 3 hens found their own way in. I doubt the ramp was helpful.
Day 4: No ramp. Every chicken found its own way into the new coop. We're on Day 6 now, and they've been putting themselves to bed at night.
After day 1, we only found 1 egg outside the new coop, and we're pretty sure it had been in the yard for days.
If anyone wants pictures, I think I'll have to create an account to upload them. Let me know.
Milo Stuart, thanks for sharing your story and pics! Very helpful!!!