Great question. How an animal is raised is going to greatly influence how the animal will react later. Now, having said that, you still may have a problem with one or two of the swans if they grow up to have an attitude, just because of their individual attributes. We have dealt with trumpeter swans that are supposed to be the the king of the mountain because of their size and they turned out to be the biggest babies on the pond. They are scared of a black swan which is approximately 2-3 times smaller than a trumpeter. So, it is going to depend on your assimilating the cygnets with the other birds immediately. You also need to watch carefully so that the cygnets do not get beat up by the geese which can lead to having skittish swans later on or ones that once they are grown demand respect for being bullied at a young age.

Usually, swans will become aggressive and territorial during mating season, and you may have to separate each of the swan pairs as well as the other birds during this time. Conversely, there are swans that will not engage other birds because they are not white in color during the mating season. This is why parents will not chase their cygnets which usually are brownish in color at a very young age. But, once they turn white, the swans will chase the juvenile swans from the area because they are seen as a rival. This is also why some swans will not chase ducks or geese if they are brownish or darker in color rather than white, because they are not seen as rivals. Again, this is totally going to depend on how the birds are initially raised and introduced to the other birds and their individual personalities. We hope this helps. The Regal Swan