Advise him of these birds being there, and ask if there is something they can do.
It may just be a case of the birds are tired and hungry.
I live in Idaho. This morning I woke up to find a gigantic flock of peacocks on my lawn. I counted at least 75. They are in my roof and a few tried to get inside. I can't even get to my car, because if I try to run to it they all swarm around and start chasing me. I didn't know there were even peacocks in the US, let alone Idaho. What should I so to get rid of them? They have been here all day.
