Watching gangs of Swifts feeding at sunset is like watching air combat manoeuvres (ACM)- the tactical art of moving, turning, and situating one's fighter aircraft in order to attain a position from which an attack can be made on another aircraft - namely insects. They are incredible flyers that rarely touch the ground - sleeping, eating, bathing and even mating on the wing, They are also the fastest birds in level flight, with an impressive top speed of 69mph. Swifts are on the red list of the UK Conservation Status Report due to loss of nesting sites in old buildings. The Circular Economy would enable more of these old buildings to be retained and repurposed while keeping nesting sites for these most acrobatic birds.
Swifts