Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many Red Breasted Nuthatch coins created before 2007 were minted, on average?

### Inputs:
table_name: table, columns: ['Year', 'Animal', 'Artist', 'Finish', 'Mintage', 'Issue Price']

### Response:
SELECT AVG Mintage FROM table WHERE Animal = red breasted nuthatch AND Year < 2007