Didn’t know that was a parameter, and not sure how to change it, so I assume scale = 1.
The bird’s mesh is 70x205x46 and the shortest fence is 9x294x140.
[EDIT] I should also make it clear that the fences are spawning offscreen. If the meshes are working correctly, they are not moving with the object.
[EDIT 2] Confirmed that the meshes are not visible regardless by adjusting spawn location.