The blue bar is your stamina, it is drained when you fly upward, replenished while on the ground or by collecting treats.
The green bar is your 'health' (if you call it that, don't worry you don't die) everytime you hit a bird this decreases, when empty it's Game Over!
There are a total of 6 upgrades to purchase, and 35 achievements to earn.
Explore more games in our Animal games section and discover popular titles like Pheus and Mor, Baby Hazel Goldfish, Insects Photo Differences, and Butterfly Connect - all available to play instantly on Y8 Games.