Dave Hanson is a retired educator living in Mission, TX.  His combined love for both nature and photography has been a driving force in his life for almost all of his life.  Dave has a Master's Degree in Audio-Visual Communications and has been an avid birder for over 55 years.  In 2001 he became interested in butterflies and since then has taken nearly 15,000 digital photos of over 200 species in the Lower Rio Grande Valley.  Dave is a member of NABA and also supports most of the other nature venues in the Valley through membership and volunteer work.  His other interests include Ham Radio, R/C flying, and Astronomy. 

Caterpillars in the Field and Garden

A field guide to the butterfly caterpillars of North America by Thomas J. Allen, Jim P. Brock, and Jeffrey Glassberg. . The first and only comprehensive guide that contains all the information necessary to find and identify these marvelous creatures. Gardeners will learn how to distinguish between the caterpillar that may one day become a beautiful butterfly and the moth larvae that will destroy garden plants. Learn about butterfly biology, butterfly gardening, and view color range maps which show where each species occurs.

Butterflies through Binoculars The West

A field guide to the butterflies of Western North America by Jeffrey Glassberg. Combines over 1,000 excellent photographs of living butterflies in their natural settings with the traditional field guide format. Shows how to identify and locate all the butterflies found in the western United States (including Hawaii) and southeastern Canada. Offers advice on photography and binoculars. Emphasizes conservation over collection and includes range maps, advice on foodplants, gardening, and flight times.