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Hooded Crows (Corvus cornix) May Be Aware of Their Own Body Size.
Khvatov IA, Smirnova AA, Samuleeva MV, Ershov EV, Buinitskaya SD, Kharitonov AN. Khvatov IA, et al. Among authors: smirnova aa. Front Psychol. 2021 Dec 16;12:769397. doi: 10.3389/fpsyg.2021.769397. eCollection 2021. Front Psychol. 2021. PMID: 34975660 Free PMC article.