Related Clues:

• Quantity that's tied to one's carbon footprint
• Big-eyed tyke
• Cockney's cry of distress encountering alien young bird
• Metalworker lays down marker to young highflyer
• Young bird that hoots
• Nocturnal baby bird
• Parliament newcomer?
• Small bird that hoots
• Baby bird in a barn
• Certain baby night bird
• Big-eyed hatchling
• Hooting baby
• Old wimp punched by student in hooter
• The Parisian punching couple around hooter
• Young, hooting bird