Possible Clues:

• Dog slipping lead finds bird
• Many a quarter back?
• Philly footballer
• Apollo 11 moon lander
• Great Seal figure
• More largely hawkish than 12 across on the links
• Bird that might be 'bald'
• Maker of a historic touchdown
• Aerie bird
• Double birdie, which can also be found at 17-, 31-, 48-, and 62-Across?