Related Clues:

• Queen's domain
• Place for a clutch
• Fit one within another
• It may be lined with down
• Nidus
• It may go out on a limb
• Snugly ensconce
• Starting point for a flight test?
• Bird sanctuary
• Comfy home
• Robin's home
• Egg container?
• Bird's ___ soup
• Get comfy
• Avian home