What is the approximate one-way migration distance estimated for a bird breeding in the UK to reach central Africa?

Answer

3,000 miles

A rough estimate suggests that a bird breeding in the UK might travel upwards of 3,000 miles one way to reach central Africa during its seasonal migration.

What is the approximate one-way migration distance estimated for a bird breeding in the UK to reach central Africa?
raritybirdwildlifeavianwarbler