I want to know the answer to the following question:
How far will Puffinus griseus migrate each year?
All the background I'm provided with is that "As they are long-lived birds, they may cover enormous distances during their lives; one record-breaking Manx shearwater is calculated to have flown 8 million km (5 million miles) during its over-50 year lifespan.". Is that enough to answer the question?