PrepTest 70 Logic Games Explanation

I just made a video explanation for the fourth LSAT Logic Game from LSAT PrepTest 70 (October 2013 LSAT). It's the game where a naturalist gives lectures on birds. The birds are of 5 different species: oystercatchers, petrels, rails, sandpipers, and terns. The lectures are given in either Gladwyn Hall or Howard Auditorium.

I explained all questions in one video that's just 11 minutes. (Get