Possible Clues:

• Dead bird a student finds outside?
• One may examine by cutting apart perennial
• Going on for ever about unidentified person outside
• Old bird a student finds outside
• Endless cross inside and outside
• Like contractors vis-à-vis employees
• Outside bird caged by old metal
• Going on and on about kiss being superficial
• Old seabird's regularly able to get outside
• Get outside by drilling nonstop