Related Clues:

• Tree dwelling
• Home in the woods
• Twig-and-mud homes
• Roosts
• Bird house?
• Bird berths
• Egg container, sometimes
• Where to pick up chicks?
• Some egg containers
• Get comfortable
• Tree house, of sorts
• Fits like matryoshka dolls
• Bird abodes
• Forest home
• Nutcracker suite?