Roosters know by light, sounds, and their own circadian cycle that it's morn'n....
thick foam insulation does help, but not totally.
Check out my website - at the bottom and see how we added the thick insulation. Problem is that it has to be covered cause they'll peck at it and eat it if you don't.
just a thought - what about checking with an accoustical tile maker to see what they have.
I like hearing my 2 month old roosters trying to crow. It is so cute. They don't do it enough for me.
But I have mine in an 8 inch thick cinderblock building that is partially below grade at night . So their noise should be muffled significantly if it ever becomes problematic. I hear one faint cock a doodle very subtly from inside their building. If I were talking to someone or breathing hard, I would miss it. Very faint sound from inside - muffled by the walls. Once i let them out to their fenced in pen, they are quiet all day. :| But I read that Australorps tend to be quiet anyhow.
You are in the Bay Area of CA, a place not particularly friendly to animal noise, poop, or any of the other things that go along with owning critters. To get along with CA neighbors, you must dress your animals up as people; they must be able to hold polite conversations, bike to work and be prepared to pay extremely high taxes.
Seriously, though, I used to live there and I believe you will all be much happier if roo finds a home out in the country. Why don't you try finding him a nice farm up north?
That was a good one! We have actually been getting along alright. We just have to bring him inside at night. Sometimes he even waits at the back door to go to bed!
Rebecca, I can't help but think that if you added the thick rolls of fiberglass insulation to your coop's walls and covered it with thin, inexpensive sheets of plywood (or other material) that even with the windows opened a small amount for air at night the rooster's crow would be so muffled that your neighbors would hardly hear it. After all, the walls will absorb most of the sound waves. You could even put a very small window fan in to assist cooling the coop.