In 1999 I ended a 20-yr collaboration with Professor Emlen, during which time we studied cooperative breeding in the colonial White-fronted Bee-eater in Kenya, and polyandry in the Wattled Jaçana in Panamá. My passion for doing field research has also taken me to the Galápagos Achipelago, where I have studied unique land-plant foraging by Galápagos marine iguanas (specialized to feed only on marine algae), and participated in a study of the pattern of stress hormones in both terrestrial and marine bird species.

More recently I have camped out on a pile of lava in the midst of Mono Lake, California, while studying the foraging ecology of California Gulls, completed a study of the trophic interactions between army ants and ant-following birds in the tropical forests of Panamá, and coordinated one of two search teams confirming the existance of the Ivory-billed Woodpecker in the 'Big Woods' flooded forests of Eastern Arkansas.

Teaching Interests: