Mute+Swans+Harmful+Effects

Althouth mute swans are a very beautiful animal, they affect are ecosystem. Some of the reasons they effect or harm are ecosystem is by feeding of all the aqatic plants that the native animals eat like tuber, flowers,leaves, seeds and plant stems, Another way they harm are ecosystem is bycompeating for reasorces with other birds. Also when swimming they rake there feet in the water which takes the substances that are on the bottom of the lake and brings it to the top of the water which makes the sunlight barley come threw the water so the plants don't get all the nutriance they need.