David is a member of the North American Nature Photography Association and an Associate Naturalist with The New Jersey Audubon Society. Over the past 17 years, David has shared his knowledge of photography teaching workshops, leading tours, and writing articles. David’s photos have been recognized in several international competitions and have been published in books, magazines and on calendars. David is an accomplished public speaker, and he has lectured at camera clubs throughout the US and has appeared at major events including the New England Camera Club Council Annual Conference and New Jersey Audubon's Birding Festival.