Possible Clues:

• Extraordinary bird gathering first of twigs
• Beginning to embrace left is unforeseen
• Astonishing time to get in gregarious mimic
• Shy holding acid, causing alarm
• Causing shock
• Remarkable bird tweeting initially having been caught
• Astonishing bird grabbing beast's tail
• Scary cocktail containing acid
• Songbird keeping time — astonishing!
• Get cracking with fish that's quite unexpected