This review will contain NO SPOILERS.
First of all, I was totally surprised when I saw the number of people who had actually seen this short. It's really disappointing watching how such educational stories stay hidden even thought this one for instance came out in 2013, while some other anime get all the praise.
Now, let me tell you few things about the movie itself. As we have a 20 min short, a detailed analyze won't be needed.
This is a story of a bird finding out both sides of life. It's very simple but still very educative.
The art is full of remarkable details, colors
are well chosen, and it really reminds on the old, but still amazing styles that can be seen in the movies (or anime) from the late 80's or early 90's.
The sound is the best part of this short, it's just amazing, if you close your eyes, you will feel the whole atmosphere of nature. There is also a nice sound track which makes the whole experience even better.
As we have no real characters, I will skip this part and go straight to the enjoyment.
All I'm going to say is that you can really sit and relax for 20 minutes. For me, it was really enjoyable, it brings back some memories from older times when we could see a variety of art styles and different ideas for shorts.
I hope this helped you, I found also sad the fact that no one took some time to review this. Overall, you should give this a shot, probably after a hard day at job or at school. It won't take you too much time and it will help you to relax as I already said.
Thank you for reading, this is my very first review, so any feedback would be greatly appreciated as long as it's constructive.