Hello!

Vue doesn't directly support 3D eco systems, but you can fake them buy driving the vertical position of instrances with a function. The easiest way is to get the "swarm" eco system from Martin Frost: http://www.cornucopia3d.com/purchase.php?item_id=6256

When you look at that you can see how it is set up and you can start from there by replacing his instances with yours. I used this approacch for the bird swarm in the image above. You can use any geometry as a base, I prefer to use an invisible terrain to add more control.

Ciao

TD