Kalle finds a clever hack

Kalle starts out well, quietly laying out the boards in the order they’ll need to be assembled. He even manages to hammer a nail quietly enough to stay under 70dB. Unfortunately, he loses hold of his birdhouse before the first two boards are nailed together, and so makes the noise of a crow. He buys time to be noisy during the task by hammering nails at full volume while announcing what his bird calls are and then naming said birds. He appears to do this several times, mimicking the call of a songbird, a great spotted woodpecker (in a clever move, he actually just hammers a nail in loudly and rapidly, as the call), a white-backed woodpecker (using the same rapid hammering technique), and a wood grouse (slamming into the same tree as the woodpeckers, complete with small, pained noises). He successfully constructs his birdhouse in 6 minutes and 30 seconds, and earns first place.

(Written by Jenny R and proofread by Karl Craven)