“…For the bibliometric analysis we gathered information on theses defended in 2000-2019 whose abstracts have been published in the section Review of Doctoral Theses in Ornithology in Ardeola: International Journal of Ornithology in recent years (Barbosa 2000b, 2001, 2003, Valera 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2015, 2018, 2019, 2021. We analysed the same variables as used by Barbosa (2000a), namely, (i) the number of theses defended per year [given that the reviews of doctoral theses in Ardeola are referred to by academic course (e.g.…”