It can be somewhat unsettling to realize that an animal you may think of as a literal birdbrain is, at least within a particular environment or framework, a little smarter than you realized or maybe even a little smarter than you.
Anyone who's ever watched a dog remove an unwanted collar or cone won't be amazed by that. I was intrigued that not only was a Magpie able to remove the tracking device but also that a Magpie was somehow able to communicate its distress to others of its kind who were interested enough to stop whatever they were doing and assist their brother or sister in precisely the method required.