The time of commencing will be later than this rule in some stocks, if the weather is cool, or not many bees left; it may be ten or twelve days. I once found it fourteen before I heard it. Also the swarm may not issue in two or three days after you hear it. The longer the swarm delays, the louder will be the piping; I have heard it distinctly twenty feet, by listening attentively when I knew one was thus engaged; but at first it is rather faint. By putting your ear against the hive it may be heard even in the middle of the day, or at any time before issuing. The length of time it may be heard beforehand seems to be governed again by the yield of honey; when abundant it is common for them to issue the next day; but when somewhat scarce, they will be much longer—very often three or four days. In these cases third swarms seldom occur.
TIME BETWEEN SECOND AND THIRD ISSUES.
Piping for third swarms (when they issue) may usually be heard the evening after the second has left, though one day commonly intervenes between their issues.
Here my experience is at variance with many writers, who give several days between the second and third. I do not recollect an instance of more than three days between, but many in less, several the next, and one the same day of the second! I had an instance of a swarm losing its queen (the old one) on its first sally, and returned to wait for the young ones; when they were ready, an uncommon number of bees were present; three swarms issued in three days! On the fourth, another came out and returned; the fifth day it left; making four regular swarms in five days. On the eighth, the fifth swarm left! Although I never had five swarms from a stock before, yet I expected this, from the fact of hearing the piping on the next evening after the fourth one had left. The piping had continued in this hive from the evening previous to the first swarm till the last one had left.
NOT ALWAYS TO BE DEPENDED UPON.
One stock in fifteen may commence piping, yet send out no swarm. The bees will change their minds about coming out, and kill their queens, or allow the eldest one of them to destroy the others, or some other way, as they do not always swarm in such circumstances. But when the piping continues over twenty-four hours, I never knew but one failure! I have known a few (two or three) to commence this piping, while I supposed the old queen was yet present, and had not left the hive, on account of bad weather, but a swarm issued soon after. Also, three instances where I supposed the old queen lost, from some other cause than leading out a swarm, and the stock reared some young ones to supply her place. It occurred in or near the swarming season, and one or two issues was the consequence. One case was three weeks in advance of the season, and the swarm was about half the usual size. When a swarm has been out, and returned at the last of the swarming season, it is much more probable to re-issue, than if it depended on an old queen for a leader, that had not been out. Such will sometimes be a week or ten days later than others. Once I had the first swarm kept back by wet weather, and the second came out on the fifth day after; several other instances on the seventh and eighth; and one as late as the sixteenth, after the first.
A RULE FOR THE TIME OF THESE ISSUES.
This may be put down as a rule, that all after swarms must be out by the eighteenth day from the first. I never found an exception, unless the following may be considered so: When a swarm left the middle of May, and another the first of July, seven weeks after, but two cases of this kind have come up, and these I consider rather in the light of first swarms, as they leave under the same circumstances, leaving the combs in the old stock filled with brood, queen-cells finished, &c. A stock may cast swarms in June, and a buckwheat swarm in August, on the same principle.
WHEN IT IS USELESS TO EXPECT MORE SWARMS.
Therefore, bee-keepers having but few stocks, will find it unnecessary to watch their bees when the last of the first swarms came out sixteen or eighteen days before. Much trouble may be thus saved by understanding this matter. During my early days in beekeeping, I wished for the greatest possible increase of stocks. I had some that had cast the first swarm, and soon after clustered out again. I vainly watched them for weeks and months, expecting another swarm. But had I understood the modus operandi, as the reader may now understand it, I should have been through with all my anxiety, as well as watching, in a fortnight. As it was, it lasted two months. I found no one to give me any light on this subject, or even tell me when the swarming season was over, and I came very near watching all summer!