D&D 5E Druids and taxidermy

[Corwin]

Query for the "must observe a living beast"-ers...

Lets say a human wizard polymorphs himself into a beast. One never before seen by a druid. Can that druid hence forth take on that particular beast's form?

 

[jasper]

it as a great party until frank's turn
http://www.bing.com/videos/search?q...eyed+one+horned+purple+people+eater&FORM=VDRE