Possible Clues:

• eg Egret
• Idol given name of bird
• Bird of the Rhone?
• A bird gets no promotion from the lady
• Grey wading bird
• 'Great white' bird
• Might be Mummy - but not Daddy - on long legs
• Long-legged bird or hen perhaps
• Bittern, e.g.
• Do you get the girl on long legs?