Related Clues:

• Bird wrecking top of gum tree
• Bird biting off top of rue
• Bird's energy mostly increased with time
• White-feathered wading bird
• One bird or another crossing river with duck
• Rook and duck protected by another bird — and another
• Bird biting top off rue
• Bird is welcome, having some energy to move forward
• One bird (rook, oddly) flew into another
• Say, wet bird
• Bird welcome when the heart is uplifted
• Rook and duck concealed by another bird — and another
• Wading bird, for example, on end of boat
• Flier held back by postmaster general
• Big bird partially responsible for another one