Plurals of Birds

["Jill & Reg Oakley" <>]

There is a discussion of collective nouns for birds going on. Perhaps there could be a discussion of how plurals of birds are formed. That is, when you are talking about more than one bird when do you add the " s " and when do you leave it off. (Two grasswren or two grasswrens).

 

Unlike most areas of human activity there just seems to be no consensus amongst birdwatchers about this.  Is there an authority?  Dictionaries don't seem to be much help.

 

Reg Oakley