In case of member's interesting to know all the threatened and near-threatened bird species recorded in Hong Kong, I list all these species below:
CR = critically endangered, EN = endangered, VU = vulnerable, NT = Near threatened
CR
Spoon-billed Sandpiper, Christmas Island Frigatebird
EN
Baer's Pochard, Oriental Stork, Japanese Night-heron, Black-faced Spoonbill, Nordmann's Greenshank
VU
Greater Spotted Eagle, Imperial Eagle, Great Knot, Swinhoe's Egret, Yellow-breasted Bunting, Japanese Yellow Bunting, Relict Gull, Saunders's Gull, Styan's Grasshopper Warbler, Eastern Curlew, Dalmatian Pelican, Fairy Pitta, Brown-chested Jungle Flycatcher
NT
Cinereous Vulture, Falcated Duck, Collared Crow, Rufous-rumped Grassbird, Asian Dowitcher, Black-tailed Godwit, Eurasian Curlew, Japanese Paradise-flycatcher, Black-headed Ibis.