So, I saw this inconsistent thing in the UI:
Then, I got to look whether a bounty is still going or not:
That clearly looks like a bounty is still going. Is it? Reads again... Oh, it had a bounty that ended.
Very confusing behavior if you ask me, this made me wonder what this inconsistency was for.
This revealed Where has the bounty gone?, which makes some kind of sense to help people.
However, it's very inconsistent and unclear to most visitors in it's current way, so I suggest:
Removal from the featured list, there is no point in the questing still being there after expiration.
A more descriptive message, add the following text: "and is awaiting assignment within X hours."