i just found this link

[Tapos]

http://instruct1.cit.cornell.edu/courses/b...students/gjs23/

check it out, seems like very interesting stuff

i thought they swayed to imitate grass in the wind?

 

[Johnald Chaffinch]

yehr, i've found that site before, is interesting. if you watch their heads before they jump somewhere they nearly always do the side to side thing, but keep their head seeming like it's focused on one spot. they're creating a 3D image like we have having our eyes far apart