He was an expert on wild flowers and the author of several guides for amateur naturalists.

Newell was also known for his love of the outdoors and became an amateur naturalist.

However the amateur naturalists who discovered the species had failed to record collection sites, so no other specimens could be found in the area.

If you include all the home tinkerers and amateur naturalists, there must be several million in the country.

A tree library next to the house will interest any amateur naturalists.

This is an area of entomology where an amateur naturalist can still make significant contributions.

It is awarded to an amateur naturalist who has made an important contribution to biology.

By this time I was a serious amateur naturalist with a special interest in anything in feathers.

Caterpillars are in some ways ideal subjects for the amateur naturalist.

He's an amateur naturalist, famous, I guess you'd call him.