On Kaua'i, 50.0% of Newell's and 76.9% of wedge-tailed shearwater fledglings necropsied during 2007-2014 contained plastic, while 42.1% of adult wedge-tailed shearwaters had ingested plastic. For both species, the frequency of plastic ingestion has increased since the 1980s.
Detection probability across different types/colours of plastic ranged from 60 to 100%, and varied considerably by observer, observer experience, and biological material present on the beach that could be confused with plastic. Blue fragments had the highest detection probability, while white fragments had the lowest.
Between 25 and 100% of Laysan Albatross and Bonin Petrel fledglings from Midway Atoll sampled in 2012 exceed international targets for plastic ingestion by seabirds. High levels of plastic were correlated with increased concentrations of chlorine, iron, lead, manganese, and rubidium in feathers.
We present concentrations of metals and metalloids in blood of 157 Little Penguins, collected over three years and during three distinct seasons (breeding, moulting and non-breeding) at two locations: the urban St Kilda colony and the semi-rural colony at Phillip Island.
We found slightly lower consumption of blue pellets than green pellets, and substantial variation among individual Henderson crakes. Females (n = 17) consumed 24% less blue than green bait, whereas males (n = 5) consumed 77% less blue than green bait
We investigated the frequency of plastic ingestion in 21 species of fish and one species of cephalopod. The overall occurrence of plastic ingestion was 0.3%. Two micro-plastic items were recovered from the gastrointestinal tract of a single Antarctic toothfish.
In Western Australia, 13% of adult flesh-footed shearwaters and 90% of fledglings contained plastic items while in New South Wales, 75% of adults and 100% of fledglings contained plastic. Shearwaters from WA did not appear to be selecting plastic items based on colour.