Possible Clues:

• Wildly celebrating a hen or equivalent
• Bury substitute — talented and transposable
• Before Spring loses the head - fickle type is one of those who can go either way
• Old test is fickle and subject to replacement with something else
• Easy to swap out
• Basically the same thing, beer and ale - can get drunk!
• Bury coins that can be swopped for others
• (Of things) that may be swapped over