It is forbidden to entering the bird reserve without permission.

The high stone wall in the lower part of the quarry (now a bird reserve) is still visible.

In the 1970s a bird reserve was established on the marshes.

A day in the life of Britain's best-known bird reserve.

It is also a bird reserve like the island of Trischen, which lies off the bay.

The island is now uninhabited and managed as a bird reserve.

In 1987 they were also designated as a bird reserve.

It has about 12,000 members in 12 local branches and administers 18 bird reserves.

It has therefore been declared a European bird reserve.

The park grew from a bird reserve founded in 1910.