Sebastian is identified by Lasse

Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.

Sebastian makes his bird sound first, and does a pretty generic whistle, to try to fool Lasse into thinking he is someone else (and not a keen ornithologist who can presumably do much better). Lasse is not fooled by his deception, and identifies him correctly.

(Written by Karl Craven)