Usually male swans will NOT re-pair with any other swan after the loss of their mate. Certainly, not with a new male introduced into his habitat. The best thing to do would be to leave him unpaired and introduce some ducks and geese into the pond. Yes, he may chase them, but usually he will go about his business and will not be lonely.

There are also other factors to consider. In order to introduce another male, you will have to build a pen (1/2 in water and 1/2 on land---zero entrance enclosed top to bottom to prevent any predators from digging under or crawling over the pen to access the swan). A feeder will need to be placed in the water inside the pen so that the new swan can become acclimated to you, the habitat, the other male (and vice versa) and the feeding system that you will be using to feed the swan. You must watch for any sides of defensiveness from either swan. If defensiveness is present, you will need to find another home for the new swan as this introduction will more than likely not work out.

Some swan breeders will not take a swan back once it is sold, so you need to have a contract from whomever you buy the swan that you can get your money back and return the swan if things do not work out. You also need a licensed veterinary certified document stating that the new swan is free from illness and injury. This will protect you the buyer and your swan from the introduction of any disease or need for return.

The problem with this whole situation is that there still is no guarantee your swan will accept the new swan. This can lead to fights resulting in possible injury or even death to one or both of the swans.

Finally, the most important issue is to find out what caused the death of the female. Without a necropsy, and even then, you may never know the cause of death. The last thing you want to do is introduce another swan that might meet the same fate. Your remaining male could be in danger for the same cause. Until you know the swan was not poisoned by something in the pond, attacked by a predator or succumbed to some illness/parasite/fungus, etc., then another swan dying in the same habitat/pond is certainly a possibility. The Regal Swan