Punta, G., and A. Covazzi Harriague. “[First Record of the Runt Eggs of the Imperial Cormorant <em>Phalacrocorax atriceps</em> and the Rock Shag <em>P. magellanicus</em> In the San Jorge Gulf, Argentina]”. Rivista Italiana Di Ornitologia, vol. 90, no. 2, Feb. 2021, doi:10.4081/rio.2020.460.