When you awaken the robot owl Merlin, he flies out of Mordred's lab. In order to get him back, you have to feed him the robot mouse. (chomp)
It is a mechanical mouse. (see related question)
You do not get or use a bucket on Astro Knights Island.
There is no treasure chest on Astro Knights Island.
Feed it the mechanical mouse (from the Maid's room) and the owl will follow you.
There are no bird eggs in astro knights island.
its on the island
To catch the mechanical mouse, in the Princess's Maid's room (castle first floor left).
How do you talk to the girl in the hay loft at astro knights island?
There is no Mechanical Island. However, Astro Knights Island is replete with robot plants and animals, while Steamworks island has actual plant monsters as well as mechanical devices. Game Show Island is populated by robots. (see the related questions)
In the Maid's room (castle first floor left) you will find a mechanical mouse.
Click on Merlin (the mechanical owl) and the click on the "green thingy." Bingo! ;D
If you fed the mechanical mouse to the mechanical owl (Merlin), he will retrieve the green fuel rod. Click on him, then on the rod.