Near the end, when McGarrett interrogates Benny who is holding his chicken, Benny asks to go to the bathroom. When he comes back, Benny is holding a different chicken. One can tell because the first chicken has a small red comb on his head, but in the later shot the second chicken has no noticeable comb.
John Hayes is being interviewed by McGarrett. When he says, "I had another drink", McGarrett asks him "Where?". But McGarrett's lips do not move. The dialogue was obviously dubbed in later.