- The whistling swan is the American version of the Tundra Swan.
- While the Tundra Swan sleeps on the water during the winter, it spends the breeding season sleeping on land.
- Tundra Swans will defend their nests against foxes, weasels, and gulls but will leave the nest quickly when bigger predators approach such as wolves, people, and bears. They do this to make their nests harder to find for predators that they cannot fend off.
- Tundra Swans stay in flocks whenever they are not on their breeding grounds.
- The roundtrip migration for Tundra swans covers 3,725 miles.
- The stomach acid of the Yellow-crowned Night-Heron is capable of dissolving the shells of turtles that they sometimes feed on.
- They tend to stay active during the day unlike other night-herons.
- A group of night-herons is called a "battery", "hedge", "pose", "rookery", or "scattering."
- These beautiful birds are listed as threatened in New Jersey and endangered in Wisconsin and Pennsylvania.
- It is important to protect this birds during their nesting season in order to avoid nest abandonment.