MechaBird

MechaBird is a boss found on day 4 of Tyke and Sons Lumber Co. It is found at Seabill's old oil rig. It must be defeated to progress in the game (by obtaining a golden acorn in the end of the boss fight).

Physical appearance
MechaBird looks near-identical to a seagull with the exception that it is made of metal. It features screws across its body and spikes on its wings and head. It has sharp teeth and hollow eye sockets with glowing pupils.

Phase 1
MechaBird drops 16 eggs, which the player must dodge. The frequency and the speed of the eggs thrown gradually increases.

Phase 2
MechaBird flies to the middle of the oil rig. Its color scheme changes from varying shades of metallic grey to a gradient of blue, green, and purple, its pupils also turning from red to yellow. The oil rig is replaced by a black background. MechaBird then shoots out discs out of its mouth, which spray out, allowing some room in between in which the player to move to avoid them.

Phase 3
MechaBird eventually flies off screen, the oil rig reappearing. Televisions adorned with spikes and MechaBird's face start to fall from the sky. In addition to exploding when the player uses their watering can repeatedly on them, the TVs explode when they come into contact with another.

Phase 4
MechaBird appears on screen again, and starts throwing larger eggs in a similar fashion to phase 1. Despite their increased size, the eggs only do one heart of damage.

Phase 5/ The end of the boss fight
The background turns black again. MechaBird's eyes become hollow, and its color changes to yellow/orange. It once again throws eggs, though they are able to be thrown back at it if the player uses their watering can at the appropriate time. After three hits, MechaBird flies into the sky and explodes.

If the player does not succeed in hitting it three times, MechaBird will overheat and explode, killing the player.

Trivia

 * MechaBirds theme is called "Flying foe"