There is no doubt that Avi- fauna has significant contribution for OUV. However, there are some site which got inscribed mostly due to Avi- fauna. Those can be better represented if we add a separate category
Why?? Avi-fauna is perfectly well encompassed within the definition of "fauna" just as is Repitilian and Insect! Categories are not meant to be "Connections" which can potentially bring in every aspect of a site (and the more the merrier), but to "Broadly" describe what a site is about without creating too many different categories. Of the 34 sites in the Fauna Category I would suggest that ONLY Banc d'Arguin is there primarily because of its Avian (rather than for other sorts of animals or for geological, scenic etc) significance. We can perfectly well allow for the fact that the Fauna category includes several types and species of fauna and consider how many of these different types need to be included in our "Essential" list (as well as whether those types are going to be adequately covered by another site within "fauna"" or by one which belongs to a different category.
Regarding the selections. In my view this category has been excessively culled (some suggestions as low as 5 out of 34!). I am closer to (but above) kkhanekhan with his 17 than to any of the others but that too lacks e.g Monarch butterfly. Whilst i am with the general view that a "ring fence" should not protect Natural sites I do feel that they probably deserve culling LESS than the cultural ones! So, taking kkhanekhan's suggestions as a starting point
I would agree that Wrangel must surely be included as the only site on the List where Polar Bears exist - as well as to ensure an "Arctic" presence.
The range of African sites has been decimated in some of the suggestions - we need to ensure that a range of habitats and "iconic" species is covered. I think I would add Okapi as well as Banc d'Arguin as a flyway.
There must be an Indian site - I also would go for Kaziranga.
The Americas and Asia must be adequately covered as per kkhanekhan (plus Monarch).
I would also consider that Aldabra should be added since it also covers "Atoll creation" as well as its birds and tortoises