Available on Google play.

https://play.google.com/store/apps/details?id=com.AkuuDigitalEntertainment.CastleBird

Amazon:

http://www.amazon.com/Akuu-Digital-Entertainment-Pty-Ltd/dp/B00MHUY1GK

Castle Bird is a highly challenging obstacle avoidance game with many different patterns. There are 4 levels the last of which is hell.

Remember that you can save your progress by landing on towers and exiting to the menu. If you exit while not in a tower OR you crash you lose everything and have to start again.

There are 4 pixelated trophies to achieve.