Nice, very nice.
It seems you know your birds, so I must lead you to the next task.
Short explanation for task 4:
There are at least 3 birds in every birdhouse.
5 birdhouses hang on beams that are not adjacent to a window.
10 birdhouses hang on beams that are adjacent to a window and 3 birdhouses hang over a window.
5 houses have 2 birds and 1 chick.
10 houses have 2 birds and 2 chicks.
3 houses have 2 birds and 3 chicks.
In total: 5×3 + 10×4 + 3×5 = 15 + 40 + 15 = 70
Your result for task 4:
For that, I will give you another letter: G
Meet me at the sculpture on Kvindens Plads.
Do not press “Next” before you are at the sculpture on Kvindens Plads.
Everybody else can then press “Refresh”.