There is a thread
here about it.
It won't be forever, but it's likely to be a couple of months and it applies to everyone, even those with 1 chicken.
If you saw the story on the BBC then it's not well written as it makes it sound as though you have to keep them in the garage or house, however what you actually need to do is keep your birds segregated from wild birds, ie - an enclosed run with solid roof so that wild birds can't mingle or poop in to your run. Prevent wild birds from accessing feeders and waterers.
I have an enclosed run with solid roof already, so all I have had to do is disconnect my water barrel from the guttering so that any poop on the roof doesn't filter down to their waterer.
I don't know much about ducks, I guess if you can enlose them in and provide a childs paddling pool it might be enough? Tarpaulins are cheap and suitable for a temporary roof, I bought
this when I was building my coop to store materials outside.
One thing to note is that I think this is the third time poultry, etc have been put into lockdown in the last 10 years in the UK with similar measures so it might be worth considering a permanent covered area in any future builds to your run / coop (this isn't why I did it, I just liked the design!).
