{"fact":"Some crow species have actually lost their caching behavior entirely! This has happened at least twice in their evolutionary history, demonstrating a diverse range of adaptations within the crow family.","context":"The second is the loss of caching behaviour and this transition also occurred at least twice independently within the corvids.","source":"Selvino R de Kort; Nicola S Clayton, An evolutionary perspective on caching by corvids, 10.1098/rspb.2005.3350","index":472}