Related Clues:

• 'It'll get down its throat, swift-like (7)'
• Is the migrant fly enough to permit this at last?
• One ... doesn't make a summer
• *Get down
• Martin is reluctant to accept regressive legislation
• Believe credulously in bird
• Take in regulations set up at base
• Believe in a bird
• Down from a bird
• Take in - migratory bird
• It's like a swift - gulp
• Eat - believe
• Consume - bird!
• Bird - drink
• Bird - gulp down