When swarming, bee scouts look for a cavity of around 40-50 litres. Most beehives tend to be about twice this size, although it's impossible to be precise, because they are usually modular, and thus expandable.
Both the bumble bee and the honey bee can fly at an average speed of about 15 mph (24 kph). Both the bumble bee and the honey bee can fly to an average speed of 24 kilometres per hour which is 15 miles per hour.
A queen's head and thorax are about the same size as that of the worker bee, but her abdomen is about half as long again as that of a worker and she is a little wider. In most varieties of honey bee the queen is about 20 to 25 mm long.
No, the Bee Hummingbird is the smallest bird in the world. Bee Hummingbirds are about 2 inches long and they weigh about 1.8 grams. Basically they are the size of a large bee, thus the name Bee Hummingbird.