Of note, ironically, geese are far more aggressive and hostile than ducks. Loved your comparison.
With the HB case we saw someone who really did seem to be showing some odd behavior, which caused many of us to conclude, in addition to known stats about those closest to the missing, that SC was involved. We were wrong, and it was a mongoose that no one ever saw coming.
That being said, it’s quite rare to have something so against all odds (bff is a baby stealing murdered), and Occam’s razor almost always wins out. That being said, I always appreciate and enjoy alternative, reason-based ideas.
I feel safe in our theories that LS is, in fact, a duck - but I’ll gladly eat some crow (or goose?) if I’m wrong.