Here's what swans typically eat:
* Aquatic plants: They graze on water plants like pondweed, water lilies, and duckweed.
* Grasses: They also feed on grasses found in wetlands and meadows.
* Seeds: They consume seeds from various plants, including those found on land and in water.
* Insects: They might occasionally eat insects, but this is a very small part of their diet.
It's important to note that swans might accidentally ingest small fish or other aquatic creatures while foraging for plants in the water, but this is not a deliberate part of their diet.