Eurasian jays shun reward for tastier delayed treat, study finds

Birds showing most self-control score higher in cognitive tests, suggesting they are more intelligent

The old saying states a bird in the hand is worth two in the bush but it appears Eurasian jays may beg to differ: researchers have found the corvids shun an immediate reward for a tastier, but delayed, treat.

What's more, the team found the birds that showed the most self-control scored higher on a variety of cognitive tests, suggesting they were more intelligent.