April 24
Good Morning all
Anne, thanks for the great pictures
Summi, indeed, he looks like an beautiful Black Swan
8:20 Karl II is still in the nest and is poking in the nest ground, while he is sitting
8:22
8:26 he is still aerating the nest
I have read a very interesting study on nest building by birds.
They bring different grasses, moss ect. with essential oils in the nest to reduce the germ burden or mite infestation.
Also, the amount of material brought is instinctively controlled. When it gets cold, they bring more material.
The poking in nest is not only for aerating the nest. They open or close air holes int the nest wall, depending on the weather, temperature in the nest ect ...
Birds in cities, such as sparrows, who do not find adequate grasses with essential oils, use cigarette butts. Of un-smoking cigarettes. That's strange. But it keeps the breeding cavity free of mites.