bird's nest vs cow parsley

Any of several plants having some resemblance to the typical nest of a bird, eg, wild carrot (Dauca carota) 

A structure built by a bird as a place to incubate eggs and rear young. 

Any tangle of fibers resembling a typical nest of a bird. 

Any of a variety of plants of similar appearance. 

Anthriscus sylvestris, a weedy biennial umbellifer native to the Old World.