Possible Clues:

• Nocturnal bird related to the swift
• Shock after dark for bird
• Noct. bird (of harsh cry)
• Bird, flighty thing on pot
• Bird giving nasty shock after dark
• A hot water bottle? That's just for the birds
• Nocturnal bird of swift family
• Chivalrous sort reportedly getting drink for bird
• Ornate thing by grate, a nocturnal bird
• Bird getting close, close to transport vessel