Can't help with why there is a wire fence on Mount Davis I'm afraid, Mr_Kam.
Dylan - most of those species you mention aren't aroundnow. Other than the Scimitar-babbler I think I've only had Leiothrix once up there. Crested Serpent Eagle I've only had twice on the Island (Tai Tam and Deep Water Bay).
As I say, I am surpised on the lack of Minivets (Scarlet and Grey-chinned) on the Island - in fact, Beetle's record from HK Park is the first one I have heard of from the Island. I'd be interested to hear of anymore. Surely it can't be long before they get over this way!
