What physical effect would it have on human and bird life?

The surrounding area is well known for its bird life.

Bird life within the reserve is also of some interest.

Because there's so much forest, the area is very rich in bird life.

It is a beautiful river with a rich bird life, especially in the spring.

The collection of scientific data on its bird life started more than 100 years ago.

In fact, many people come to the region to see the abundant bird life.

You'll see more bird life if you head out at sunrise or around 16:00.

For many the desire to live close to bird life is important when choosing a home.

They had a devastating effect on the native bird life.