Hi Andreas,
Thanks for the chance to vote on this. I agree that diversifying low-traffic forums just leads to "too much of not enough"... this being said, if the board admin is really interested in having forum members be true to the definition of each and every sub-forum, then you'll likely need to add this sub-forum.
If, however, folks are okay with the existing "reports" sub-forums including posts like, "I just saw a blue-jay at my feeder! First time ever!" Then I think we're good without it.
Frankly, I love the bird-nerd chats that get started in these forums and in general think that low intensity moderation is a good thing.
Best,
Pat