{"fact":"Unlike ravens, carrion crows display a greater fear of strangers, interacting less frequently with unfamiliar people even as fledglings, suggesting an inherent wariness.","context":"Between species, for the novel person condition, the ravens interacted significantly more frequently with the person than the crows at both life stages.","source":"Rachael Miller; Thomas Bugnyar; Kerstin Pölzl; Christine Schwab, Differences in exploration behaviour in common ravens and carrion crows during development and across social context, 10.1007/s00265-015-1935-8","index":56}