Why is it that when you send something by car it's called a shipment, but when you send it by ship it's called cargo?
In order to maintain air-speed velocity, a swallow needs to beat its wings forty-three times every second, right?
Swallows are pretty damn crap in the speed stakes..................OK I know a stooping Peregrine Falcon holds the speed tecord, but you look at level flight, well the spine tailed swift is the kiddy..........none as good as a Bluebird though <oK.
The have a falcon in the Millenium stadium to stop the pigeons nesting in the roof. The pigeons can actually fly faster in level flight than the falcon but the dumb buggers don't know that so they all keep away.