N. J. Collar's scientific contributions

... To examine the threat status of recently split species, we identified the species in the literature that have been associated with taxonomic updates and proposed revisions within the last decade (Supplementary Table 2). This includes the 35 species recognized by BirdLife International (2021) that have recently been described as a result of species splits (Lohman et al., 2010;Collar, 2011;Rasmussen et al., 2012;Hosner et al., 2013;Campbell et al., 2016;Arndt et al., 2019) and, if applicable, the endemic Philippine parent species from which these birds were split (Supplementary Table 2). We also included the 19 species that consist of one or more cryptic populations that have been recommended to be split but have yet to be split and recognized by BirdLife International (2021) as separate species (Supplementary Table 2; Lohman et al., 2010;Collar, 2011;Campbell et al., 2016). ...