Ecology

Roof and Meadow

In New England Fields and Woods

In Pursuit of Spring

Adventures in Contentment

Flashlights on Nature

The Web of Life

Food Habits of the Thrushes of the United States

An Elementary Manual of New Zealand Entomology

The Life of the Fields

A Watcher in The Woods

Colin Clout's Calendar: The Record of a Summer, April-October

Types of Australian weather

Submerged forests

How to Keep Bees

Urban Bee Guides

Extinction Race

Natural Treasures

Wildlife Rescue Action

Desert to Jungle

Wildlife Conservation Efforts