Among the weirdnesses we have the eggs of animals (rabbits) which don't lay eggs. And also the eggs of animals (robins) which do lay eggs, but not in candy form. Pop quiz: name three distinguishing characteristics between Cadbury Mini Eggs, Robin Eggs, and Hummingbird Eggs. Go!
I can't really imagine why Whoppers decided to make an egg-shaped malted milk ball and call it Robin Eggs for Easter. Nothing about that makes sense, if you start to deconstruct it. Sure a lot of candies will make a pastel version for Easter. (M&Ms are the undisputed rulers of "strange colors; same candy" releases.) But why a robin specifically?
The robin has historically been known as the first harbinger of spring. Although robins have no particular connection to Easter, you get that springtime vibe serving as the bridge. It's still a bit strange, though, right? Like, why not be overtly Easter-y?
My personal theory here is that Whoppers is trying to capitalize on the Jewish, or at least non-Christian market. If you're Jewish and you want to keep your kids free of Christian stuff, you're going to have a hard time at Easter, because kids LOVE that candy. And there is JUST SO MUCH OF IT.
Enter Robin Eggs, which are nicely non-denominational.
Admittedly, my line of reasoning is somewhat undermined by the fact that Robin Eggs aren't kosher. However, they bear the U-in-a-Circle mark of the Union of Orthodox Jewish Congregations. This mark means that Robin Eggs are prepared under Rabbinical supervision. They also have the D mark for dairy ingredients (hint: malted milk). Not every Jewish person keeps kosher, of course. So I stand by my theory.
As to the candy itself: I like these. I try to hunt down a bag every year, if only a small bag. They are basically extra-large Whoppers, with a slightly different candy shell. Instead of the softer chocolate outer coating on regular Whoppers, these have a crunchy candy shell in springtime colors.
The crunchier candy shell gives these an extra kick to the texture that I really like. Whoppers are already a nicely crunchy candy, with that wonderful malty center. Put a hard candy shell on that, and you've got yourself a winner!
On the other hand, the candy shell shifts the flavor of the candy from "chocolate" to "undifferentiated sweet." Losing some of the chocolatey goodness of the outer coating makes the flavor a little brighter and more insipidly sweet. These are all about the crunch.
Robin Eggs are also speckled in a fetching fashion, which makes them excellent as a display candy. And their large size (about an inch long from pole to pole) means that they work well in Easter baskets. If you toss a handful into the plastic Easter grass, they will look attractive without being impossible to hunt out of the bottom of the basket later.