leonia wrote: April 13th, 2018, 3:44 pm
It's often used under ornis in Germany für behaviour that does not really seem to fit to maybe dangerous situations for the bird, the eggs or the offspring.
This is a wrong interpretation of displacement activity behavior
Predators, I know it only in cats, show displacement activity if, for example, they could not kill a prey.
This behavior is not described in birds.

At least I can not find anything like that!
BTW: For me it was a normal behavior of a black stork. He just did not react as violently as Zile, that's what I wrote.