David is a media personality, author, blogger and a naturalist with the National Wildlife Federation. He hosted and co-produced Backyard Habitat on Animal Planet, a television series airing from 2005-2008 that showed people how to transform their yards and gardens into thriving habitats for birds and other local wildlife. David also appeared in an Animal Planet mini-series in April of 2007 called Springwatch U.S.A. that looked at the effect seasonal change has on wildlife from salamanders and flying squirrels to great horned owls and black bears.