I will have a problem if putting the well-established (or previous established)exotic bird into Cat. E.
As we usually can't sure how long the population will last in HK, it would be a difficulty to justify if a new exotic bird is Cat. D or E in early assessment.
In my understanding of Mike's proposed categorization, Baya Weaver is clearly Cat. E while Velvet-fronted Nuthatch is Cat. D. But how about House Crow? I think it can't be eliminated totally in HK, but who can guarantee? The Chinese Baxbax was once thought to be stable in Tai Mo Shan but nowhere to find now. Grey-cheeked Fulvetta was once sparse but the record never end.
The result may need the Record committee to assess the marginal birds repeatedly.
Of course, as a usual member, it's not my business.
