Ensure precise dragging of 'PAST' and 'FUTURE' buttons to the correct elements. The order of operations is crucial for successful completion. The heart icon only appears after the bird's eggs hatch.
Pay close attention to the visual cues as elements change. The game relies on logical progression of time manipulation. If an action doesn't seem to work, try a different time button (PAST/FUTURE) or a different element. The heart icon is a key trigger for the final step.