Possible Clues:

• Hawk's home: Var.
• Tree house
• '...glance to and fro, like ___ Sprites': Wordsworth
• Alternative spelling for an eagle's nest
• Lofty nest
• Bird's home: Var.
• Cliff dwelling (Var.)
• Always full of hesitation when seeking nest
• High nest (Var.)
• Nest on a cliff (Var.)