Related Clues:

• Pioneers
• Home makers
• Birds
• Empty ___
• Fledglings
• Avian home makers
• Pioneers, often
• Suit enders
• Parents of absent children (with ''empty'')
• Early arrivals?
• Cranes constructing homes, e.g.
• Birds, at times
• Homestead Act beneficiaries
• Twig-toting birds
• Tree house makers?