·Survey of breeding birds of Sandy Hook, New Jersey. Independent research funded by the National Park Service.
·Survey of breeding birds of southern New Jersey cedar swamps (including Bear Swamp in Cumberland County, and other Delaware Bayshore sites). Independent research funded by the New Jersey Audubon Society and the Frank F. Chapman Fund of the American Museum of Natural History.
·Distributional study of grassland birds in New Jersey. For the State of New Jersey, Department of Environmental Protection, Endangered and Nongame Species Program.
·Aerial and ground survey of migrant shorebirds on the Delaware Bayshore, NJ. For U.S. Fish and Wildlife Service. This was the original study documenting the hemispherical importance of the Bayshore to the survival of many species of migrating shorebirds.
·Aerial survey of shorebirds on Raritan Bay, NJ. For the State of New Jersey, Department of Environmental Protection, Endangered and Nongame Species Program.