I agree with the others about not panicking, and not dumping your animals at the park.
If time is short, you can temporarily house your ducks with the chickens. Yes it might be stressful for them, but if its temporary then it will be ok.
Also like someone else said, I am sure your HOA (I hate HOA's) will either give you a reasonable amount of time, or can be contacted and talked into giving you a reasonable amount of time to move them.
As long as they know your working on a solution and not planning to keep them at the city house permanently then they should be able to be patient.
If time is short, you can temporarily house your ducks with the chickens. Yes it might be stressful for them, but if its temporary then it will be ok.
Also like someone else said, I am sure your HOA (I hate HOA's) will either give you a reasonable amount of time, or can be contacted and talked into giving you a reasonable amount of time to move them.
As long as they know your working on a solution and not planning to keep them at the city house permanently then they should be able to be patient.