Tuesday, March 4, 2014

DAY 234: JACKIE JACKDAW (AGAIN)



 I notice that in POST 230: JACKIE JACKDAW, I placed some info about Jackdaws using their eyes to convey messages to other birds, then I forgot to go back to it the following day!  Apologies.......here is the info:

In the study, the researchers installed one of four different pictures in natural jackdaw nest boxes near Cambridge, England, before the spring breeding season. One was solid black, one had just a pair of jackdaw eyes, one had a jackdaw's face with jackdaw eyes and one had a jackdaw's face with black rook eyes. Then, they filmed the birds to see how they behaved in response to each image.

The videos revealed that the nest box containing the jackdaw with bright eyes was the most likely of all the images to deter other birds from approaching the nest. The findings suggest that jackdaws use their eyes to send a warning message to other birds.

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