Possible Clues:

• Resilience of a bird supporting weight
• Staying with this keeps one going
• Staying power southern girl displayed crossing America
• What gives me strength when I'm wrestling with Satan
• This man owes his strength
• Staying power of mostly outstanding songbird
• Staying power for beginning of a leader about a leader
• Power at mains switch
• The rugs are turned over in a way that makes it staying that way 97)
• The rug's turned up in a way that's staying