I've seen a couple oddly placed/floating horned statue structures spawn floating. Here's one i found at y 26 in the end. Not sure if this is a compatibility thing with other mods.

In theory they should be filtered out by biome tag associated with the structure. What version are you playing with? What's the biome structure is located at?

This was at the very bottom of the world in the end islands. I'm playing in 1.18.2 with forge 40.2.1 and Paraglider v 1.6.0.5.

I have something like 200 other mods installed, too. It's probably some sort of worldgen conflict.