Pardon the stretching; I'm running it with some odd version of wine with problems. Also, I didn't spawn any items at all or do things outside of the screen capture and I'm not sure if those even would have helped.
Disposal of useless thing:
In position (do this correctly if you like it easy):
If you did that correctly, you should be able to land on the bird fairly easily:
Victory:
And the key is up there with the door so just go back up there and leave