Can you find anyone to keep your rooster for a week or so?Complaining neighbor wants me to get rid of my silkie roo by this weekend. I offered to put the silkie in a back shed or try a no crow collar (wish I didn't have to), and he said it doesn't matter of the crow is muffled or less frequent because it annoys him and he and his wife works from home.
Then tell your neighbor you did "something" that should make it quieter, and ask them to pay attention for the next week or so, and tell you how well it worked. (They will probably assume you tried the no-crow collar, or put the rooster in the shed, or something like that.)
If the neighbor says it is just as bad, but you know your rooster was actually gone at the time, then your rooster is not really the problem, and you might as well bring him home again. (And point out to the neighbor that your rooster was gone that week, so clearly whatever they heard was not coming from him.) But if the neighbor does say the problem went away, then maybe your rooster is more obvious or crowing more often than you realize.