It is getting popular and it's just because of robotics and its budget. But there's nothing special in this film, except the trailer was so good. The story is not so convincing. The first half concept is almost good but the second half of movie is so boring. The concept of saving birds is logically not acceptable. Because, insects also have the rights to live on earth. They also play important role. The surroundings must be balanced and thus all of the beings are inside the nature. One eats another and it's the vital rule of the world. If this doesn't happen then no-one can even live politely crowd environment.
BTW, this is just an average movie. Only producing films with high budget doesn't spread it to the market to be involved in the crowd. It must have nice story to convince people.