15.46 - Karl saw someone near the nest, got up and started calling.
Karl hasn't received anyone yet, so he started to adjust and aerate the nest
continuation:
15.59 - He saw someone again and started calling.
16.48- Karl saw someone near the nest, got up and started calling.
17.38 - Karl is still on the nest. He was busy grooming his feathers, grooming the nest and resting.
18.04 - Karl flew away, probably for dinner
