From science.sciencemag.org - July 15, 2017 8:53 AM
Until recently, planning for the future has generally been considered to be unique to humans. Studies in the past 10 years have suggested that apes and scrub jays are also able to make such plans. However, these studies—especially those in the birds—have been questioned. It has been argued that planning in foraging and natural tasks is not the same as planning in a more general way. Kabadayi et al. tested ravens with tasks designed to specifically assess their general planning abilities (see the Perspective by Boeckle and Clayton). Confirming their forward-planning abilities, the birds performed at least as well as apes and small children in this complex cognitive task.

Science , this issue p. [202][1]; see also p. [126][2]

[1]: /lookup/doi/10.1126/science.aam8138
[2]: /lookup/doi/10.1126/science.aan8802