A forum for discussion of recent advance in avian and mammalian wildlife toxicology was held at the October 17, 1978 New Orleans meeting of the ASTM pesticide subcommittee. The need for this type of forum and publication of papers has been apparent since other scientific groups have not sponsored such work on a regular basis. Wildlife toxicology papers have often been included in human toxicology sumposia or conferences, but in such few numbers and with so little emphasis that they have gone virtually unnoticed. Wildlife toxicity work representing effects on the many species that exist in nature is difficult to simulate in the laboratory and difficult to interpret in the field. Thus, much thought must be put into indicative test methods representative of real-world environmental conditions, applications, and effects. Papers include EPA's Regulatory Requirements for Wildlife Toxicity Testing; Environmental Contaminant Studies by the Patuxent Wildlife Research Center; Dietary Toxicity Tests With Mallards, Simulating Residue Decline of Chlorpyrifos and Avoidance of Treated Food; Simulated Field Studies-Acute Hazard Assessment; Physiological Techniques for Assessing the Impact of Oil on Seabirds; Endrin Versus 12-Ketoendrin in Brids and Rodents; Efficacy and Safety of Diphacinone as a Predacide; Acute Toxicant Identification in Whole Bodies and Baits Without Chemical Analysis.