Those pictures made me think that those were just inviting some organism to move into a new niche based upon bicycle predation or bicycle parasitism. And sure

Those pictures made me think that those were just inviting some organism to move into a new niche based upon bicycle predation or bicycle parasitism. And sure enough, if you look closely enough, you can see the bike mold creeping up to cover the old, weak, and sickly bicycles that can no longer keep up with the herd.