Baz wrote:
Since mid October we have had only a few eggs.
Could this be due to some people letting off fireworks and scaring the
chickens?

I would have thought it's because the days are getting shorter.
Our really reliable white chicken who used to lay nearly every day has
stopped laying. :-( She seems to have a bit of a bare bottom, so guess she
is either moulting, or someone is bullying her (which is a bit ironic, cos
she used to be the coop bully!)