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Punta, G. and Covazzi Harriague, A. 2021. [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. 90, 2 (Feb. 2021). DOI:https://doi.org/10.4081/rio.2020.460.