Strange ball of hay on the power lines By StreetViewFun.com On December 28, 2010 · 2 Comments View larger map Tweet GD Star Ratingloading... Similar Street View images: Wrecking ball Tan lines Strange animal South Africa
This is the nest of the social weaver, they build a big nest together like this. There is another one a couple of hundred metres back.
This is actually a Sociable Weaver bird communal nest:
http://en.wikipedia.org/wiki/Sociable_Weaver