We analysed feathers from flesh-footed shearwater collected from 5 breeding colonies throughout their range. Using stable isotopes and trace element concentrations, we assigned birds recovered from fishing vessels to colony of origin, and investigated the rate of correct assignment at 3 spatial scales.
We compared the prevalence and composition of debris in nests and along the beach at two Brown Booby (Sula leucogaster) colonies on Ashmore Reef. The proportion of nests with debris varied across islands (range 3–31%), likely in response to the availability of natural nesting materials.
Concentrations of total polychlorinated biphenyls (PCBs) and 22 elements were determined in Short-tailed Shearwater muscle to evaluate the safety of this meat product for human consumption. Among muscle samples, 57% exceeded food safety standards for either lead or copper.
We used Bayesian statistical methods to combine data from the literature with more recent, but incomplete, field data to estimate population parameters and trends. There is a 70% probability that the flesh-footed shearwater population on Lord Howe continued to decline during 2003–2009, and a number of possible reasons for this are suggested.
We used Leach’s Storm-petrels in Newfoundland to study the effect of dose volume, and the efficacy of emesis using syrup of ipecac as an emetic. Almost half the storm-petrels sampled had ingested plastic, ranging from 0 to 17 pieces, and weighing 0.2–16.9 mg.