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@marianomariano

My favorite jay and what is the "foam test"? I had never paid much attention to its behavior until I read an article about how this bird behaves in certain situations. And that's how I found out that there is such a thing as a "foam test", which the jay passes perfectly. Well, some birds, including the jay, can refrain from eating their favorite food, for example a nut they just got, if they know that thanks to this they will get even more of this delicacy. This ability to delay reward and refrain from immediate food consumption testifies to this bird's amazing cognitive skills, speed of learning and, as it turns out, planning for the future.

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