It's called "possession by acquisition " in most states. Good thought!I don't understand how you lost if three were in your favor and two against.Does it take 4 votes to win? Also at the very beginning of this thread you mentioned that the town said you could have roosters so did they misread your zoning or something?
The bamboo fence is a very good idea. Also consider enforcing your property line as recently discovered by the surveyor that you have more land than you thought. Some places, if you let the neighbor have the land too long, they can claim ownership of the part they used. I don't know how that works but you definitely don't want it happening to you.