Re: Why do peacocks have such long necks? Is it for feeding?

I don't think there is any analogy between the feeding behaviour of 
peacocks, and any feeding activities in any primate.  Basically, we don't 
peck !  Most birds, including peacocks, seem to specialise in picking up 
numerous small items such as insects and seeds, and very few tear off large 
chunks to chew and swallow like mammals do.  I suppose the nearest we come 
to pecking is eating pine nuts.

I suspect the long neck of the peacock fulfills the same purpose as that of 
the horse or giraffe - they have long legs, so they need long necks to 
reach the ground.  The neck of the peacock is bright blue, and presumably 
contributes to its display, so it is possible that the neck may be larger 
than necessary for this reason.