x2I would look up the exact ordinance. If it's just a noise complaint, I do know it has to be so many repetitions in a certain amount of time. Most dogs can't even fit into noise ordinance levels, and we all know how much they can bark. Noise generally is after 10PM. Good luck!
if the ordinance doesn't prohibit chickens, or specifically roosters, then it may just evaluate any noise:
1) decibels (how loud), and
2) sustained noise (how long).