Alien birds have a blue eye in between two pieces of metal. These pieces of metal are grey at the front with a yellow line behind the grey part and pink towards the end.
Alien birds fly in groups of four in a formation of a plus sign (+), the birds being at the end of the plus sign. They fly in a zig-zag motion, even through walls and enemies.They have no special attack, and will explode when they touch Canary 214-LE. While moving, they move their winglike beak up and down periodically. They appear less times as opposed to any other enemy.
- The alien bird may be a type of alien bat, judging from their similar appearance to them.
- The beaks of the bird are coloured in warning stripes, suggesting the birds are actually alien larvas with the ability to fly and pieces of metal as beaks.
- The appearance of the alien bird is likely based off of Shriekbats from the Metroid series.
- Their behavior bears similarities to Wavers, also from the Metroid series.