Question

what is the air speed velocity of an unlaiden swallow

Answer 1

What do you mean? African or European?

Answer 2

well, we know a swallow it needs to beat its wings 43 times every second...

Answer 3

Dont know about the air speed velocity of an unlaiden swallow, but here is a paper that discusses "Determining the Smallest Migratory Bird Native to Britain able to carry a Coconut" < https://physics.le.ac.uk/journals/index.php/pst/article/view/306/147 >

Answer 4

In order to maintain air-speed velocity, a swallow needs to beat its wings 43 times every second.