A great many apiarians raise their hives an inch from the board early in spring. They seem to disregard the chance it gives robbers to enter on every side. It is like setting the door of your own house open, to tempt the thief, and then complain of depravity.
Let it be understood, then, that all good stocks, under ordinary circumstances, will take care of themselves. Nature has provided means of defence, with instinct to direct its use. Non-resistance may do for highly cultivated intellect in man, but not here.
We will now notice the appearance about a weak hive that makes no resistance, and show the result to be a total loss of the stock, without timely interference. Each robber, when leaving the hive, instead of flying in a direct line to its home, will turn its head towards the hive to mark the spot, that it may know where to return for another load, in the same manner that they do when leaving their hive in the spring. The first time the young bees leave home, they mark their location, by the same process. A few of these begin to hatch from the cells very early; in all good stocks, often before the weather is warm enough for _any to leave the hive_. Consequently, it cannot be too early for them at any time in spring. These young bees, about the middle of each fair day, or a little later, take a turn of flying out very thickly for a short time. The inexperienced observer would be very likely to suppose such stock very prosperous, from the number of inhabitants in motion. This unusual bustle is the first indication of foul play, and should be regarded with suspicion; yet it is not conclusive.
It is the duty of every bee-keeper, who expects to succeed, to know which his weak stocks are; an examination some cool morning, can be made by turning the hive bottom up, and letting the sun among the combs. The number of inhabitants in them is easily seen. When weak, close the entrance, till there is just room for one bee to pass at once. The first real pleasant days, at any time before honey is obtained plentifully, a little after noon, look out for them to commence robbing. Whenever a weak stock is taken with what appears to be a fit of unusual industry, it is quite certain they are either robbers or young bees; the difficulty is to decide which. Their motions are alike, but there is a little difference in color--the young bees are a shade lighter; the abdomen of the robbers, when filled with honey, is a little larger. It requires close, patient observation, to decide this point, and when you have watched close enough to detect this difference, you can decide without trouble.