Here are three observations from the seventh day of Bills training camp: The Bills are set to be without first-round rookie Maxwell Hairston for a few weeks following his knee injury. The first practice without him was Thursday and we know who is behind him on the depth chart. It's sixth-round rookie Dorian Strong who is getting his shot now.

Multiple pass catchers returned to Buffalo Bills practice on Thursday, giving the offense a boost as training camp resumed after a day off at St. John Fisher University. But they were without two potential starters who cover wide receivers.