朝イチはみんなお腹をすかせてるので、一瞬で鳥たちのヒーローになれます。
なので、朝イチに行くために前日泊まったのです(笑)

They're all hungry first thing in the morning, so you can instantly become a hero to the birds.

Thus we stayed overnight the previous day so we could go first thing in the morning. :-)