According to the tutorial "Step by step creating a flock of low poly birds in Blender" I created a flock of crows.
The flock has in its structure a System of Particles, armatures, animations, modifiers.
Now I need to have nine independent flocks of crows in one scene. I need to set a unique behavior for each flock (for example, add a Build modifier).
I'm doing 'Duplicate Collection' (Crows_Flock) in Outliner. At the same time, the collections remain linked. Changing the settings of one leads to changing the settings in the other collection.
How to properly copy a given collection so that each of them is detached from the others?
Blender version 3.6.2.