Diatomaceous earth or borax will get rid of them sprinkle it oround your coop and run and the earth inside coop and run i used to get them all the time we have deer heads on our walls hunting trophies but they're easy to get rid of
These are flying bugs not crawling ones......
Not larder beetles.
https://www.beetleidentification.org/information.php?primary_name=larder-beetle