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Could a viral infection have triggered feather evolution?



Well, surely an almost entirely speculative subject, but I was
wondering if a viral infection could have being at center of the
feather origin in maniraptorian dinosaur lineage (some people think
that a viral infection could have triggered mammalian placenta origin
too).

The images about "tree man" (e.g.
http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2007/11/12/wtree112.xml)
have some superficially pennaceous-like structures.

[]s,

Roberto Takata