A keen naturalist, he is actively involved in conservation.

Three keen naturalists describe the relationship with their 'local patch'.

But she was also a very keen naturalist, and she had complete control over the nation's politics.

Sam was also a keen and talented naturalist.

O'Neill has been a keen naturalist since childhood.

He lives in Buckinghamshire, and is a keen naturalist and gardener.

As a keen naturalist in those times, he already had a broad interest in nature, but this marked a new turn in his career.

She was a keen self-taught naturalist and many of her nature articles were anthologised in 1986.

A keen naturalist and student of the butterfly fauna.

From an early age he was a keen naturalist, and began his scientific work as a collector in the field.