His paintings focus on birds and plants of the Sangamon River Valley, near Springfield, Illinois, that are found in the steep, forested banks and flood plains of the Sangamon River. His array of avian life, native and migratory, are often pictured as encircled by menacingly sharp-leaved plants that remind us of human complicity in climate change, habitat fragmentation, invasive species, and genetic modification. He says, "I create omnivorous plants to represent the environment."