There are several things that can cause that behavior.
If theres no sound, I don't think you can call it a crow, it is probably just a yawn, or something may not have gone down the right way, or if it continues repeatedly and frequently, it could be gape worm, but Id say it is most likely just...
You're paranoid!
Actually I have no idea but welcome to the board.
I'm not sure about Seattle laws, but I do know that King County law say that if you have half an acre of land, you can have a maximum of 2000 chickens, but if you have less then half an acre, its three.
It still baffles me how...