To marie2525cat, ebel94 and all the others that can't take the flower from the bird (SPOILER):
First, you have to set Harvey (the parrot) free with the golden key in Spring. Then, after breaking the window open with the hatchet, you have to play Harvey's Song on the radio. Then, he'll be there.
 "Focus"){kind=icon}
 "Cube Escape: Seasons"){kind=icon}