Image from webcam by Maggy, LK forum
From the egg with ”holes”in it sounds could be heard late in the evening
Tawny owl Kodukakk Strix aluco
So owl mother Klaara laid her eggs in the nest trunk on March 15, 18, 21 and 24. This is how larger birds particularly birds of prey do, because the development of larger eggs is an energy-intense activity.
In the evenings Klaara has been actively ”clattering” the eggs around and socializing with them in a quiet voice (with male Klaus she communicates quite differently).
How do the owlets hatch? For this they (as other birds) are helped by a sharp egg tooth that can create a crack in the egg shell in its limited movementspace and then help the chick to pick its way out of the shell, and this may last even longer than 24 hours (this the chicks must manage on their own to prove their vitality). After the hatching an attentive viewer may see the whitish egg tooth for some time on the chick before the tool drops off.
We will look at the development of the chicks of various ages in detail when the time arrives.