predominantly tree-dwelling birds, while bird groups that survived the extinction and gave rise to extant birds were non-arboreal. A study on the evolution of the anatomy of the crown-bird skull is published by Felice & Goswami (2018), who also present a hypothetical reconstruction of the ancestral crown-bird skull. A fossil tinamou belonging to the genus Eudromia, exceeding the size range of living species of the genus, is described from the Lujanian sediments in Marcos Paz County (Buenos Aires Province, Argentina) by Cenizo et al. (2018). A study on the dietary behavior of four species of the moa and their interactions with parasites based on data from their coprolites is published by Boast et al. (2018). A study on the seeds preserved in moa coprolites is published by Carpenter et al. (2018), who question the hypothesis that some of the largest-seeded plants of New Zealand were dispersed by moas. A study on the genetic and morphological diversity of the emus, including extinct island populations, is published by Thomson et al. (2018). A study on the timing of first human arrival in Madagascar, as indicated by evidence of prehistoric human modification of multiple elephant bird postcranial elements, is published by Hansford et al. (2018). A study on the anatomy of the brains of elephant birds Aepyornis maximus and A. hildebrandti, and on its implications for inferring the ecology and behaviour of these birds, is published by Torres & Clarke (2018). A model of development of bony pseudoteeth of the odontopterygiform birds is proposed by Louchart et al. (2018). A study on the phylogenetic relationships of the taxa assigned to the family Vegaviidae by Agnolín et al. (2017) is published by Mayr et al. (2018). A study on the adaptations for filter-feeding (other than beak shape) in the feeding apparatus of modern ducks, evaluating whether they could be also found in the skull of Presbyornis, is published by Zelenkov & Stidham (2018), who argue that Presbyornis most likely was a poorly specialized filter-feeder. A study on the phylogenetic relationships of the species Chendytes lawi and the Labrador duck (Camptorhynchus labradorius) is published by Buckner et al. (2018). Schmidt (2018) interprets more than 1000 large, near-circular gravel mounds from western New South Wales (Australia) as likely to be nest mounds constructed by an extinct bird, similar to the malleefowl but larger. A study on the phylogenetic relationships of Foro panarium is published by Field