Pros - close fitting, small hole just big enough for rope to pass through, angled to discourage perching
Cons - doesn't fit tightly/lock into place
Tried a different feeder with lid that turned out to be a "one size fits all" lid and merely sits on the top of the feeder - and I had a daring chicken perch on it :/
This lid sits right down on the feeder (as long as you have the correct size/brand feeder), and doesn't flop around. It covers nicely and leaves just enough room in the hole at the top to run your hanging cord through the top. For the size of the feeder - this is the best that I've found for a feeder/lid system.