In the ICD-10, the symptoms of hyperkinetic disorder are analogous to ADHD in the DSM-5. When a conduct disorder (as defined by ICD-10) is present, the condition is referred to as hyperkinetic conduct disorder. Otherwise, the disorder is classified as disturbance of activity and attention, other hyperkinetic disorders or hyperkinetic disorders, unspecified.
It depends on whether you are talking about an African or European swallow. The airspeed velocity of an unladen swallow is roughly 11 meters per second, or 24 miles per hour*, beating its wings 7-9 times per second (rather than 43). But please note that a 5 ounce bird cannot carry a one pound coconut.
The European Swallow (Hirundo rustica) must beat its wings 18 times per second to remain airborne (not 43 as is popularly believed). Comparing this with the average amplitude of their wing beat we come out to an average airspeed of about 11 meters per second (approximately 24 miles an hour). This is cruising speed, mind you.