Help To Find The Portal

Bit of a crisis at the Mongolian Barbecue Restaurant. Sparrow flew in as I entered and started crashing about the place. Crashed into window and nearly tumbled onto the hot surface where staff was cooking my lunch. So, we opened the door, and like the 2-D creature lost in the 3-D world in the Outer Limits episode "Behold, Eck" the bird found the portal back into its own Universe, and departed.