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Birds 'weigh' peanuts and choose heavier ones
Birds 'weigh' peanuts and choose heavier ones
http://feedproxy.google.com/~r/sciencedaily/strange_science/~3/iJ7VGnZDSIE/150522174719.htm?utm_source=feedburner&utm_medium=email
Mexican Jays (Aphelocoma wollweberi) distinguish between heavier and lighter peanuts without opening the nuts. The birds do it by shaking the nuts in their beaks, which allows them to 'feel' nut heaviness and to listen to sounds produced by peanuts during handling.
2 replies
= new reply since forum marked as read
= new reply since forum marked as read
From a bird owner
I already knew that.
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Thanks for the information. So credible, of course. Birds are wonderful.
