The Times Concise puzzle clues 2017 May 15

• Cover for rangefinder Crossword Clue
• Door viewer Crossword Clue
• Figure in computer game Crossword Clue
• Form of transmission used in bicycles Crossword Clue
• Grass fodder Crossword Clue
• Hidden store of valuables Crossword Clue
• Long avenue or garden path Crossword Clue
• Made angry Crossword Clue
• Mathematician associated with symbolic logic Crossword Clue
• Mineral or metal source Crossword Clue
• Nonconformist faction Crossword Clue
• North American native Crossword Clue
• (Of cows) give birth Crossword Clue
• Onlooker Crossword Clue
• Salted and peppered Crossword Clue
• Squirrel's nest Crossword Clue
• Stupidity Crossword Clue
• Table-top game Crossword Clue
• Track made by wheels Crossword Clue
• Verdi opera Crossword Clue
• Very corrosive liquid Crossword Clue