Issued in 2010, this pair of stamps features the migratory black-faced spoonbill (Platalea minor), a vulnerable species found in coastal eastern Asia. It feeds on small fish, shrimps, frogs, insects and plant matter. Here, it is depicted in its winter plumage as it lacks the yellow markings present on its neck and rear side of its neck, which are characteristic of its summer plumage. 

Another cover from Hong Kong with stamps from the 2006 definitive set. Scarlet Minivet is already presented. The Little Egret (Egretta garzetta) is a small heron with two subspecies. E.g.garzetta breeds in Africa, Asia and Europe and E.g.nigripes in Australasia and Indonesia. It feeds on fish, amphibians, crustaceans, reptiles and insects. It is an endangered species.

Now I will present another cover from Hong Kong with another two values of the 2006 definitive series.
White-bellied Sea Eagle (Haliaeetus leucogaster): It lives on the coasts of southeast Asia and Australia. It feeds on fish, turtles, sea snakes, birds and mammals which it catches.
Scarlet Minivet (Pericrocotus flammeus): It lives in tropical southern Asia. This bird is 20-22 cm long. It has many subspecies. It eats insects.

Here is a cover from Hong Kong with a strip of 3 Common Kingfisher (Alcedo atthis) stamps. The Common Kingfisher lives in Europe, Asia and north Africa and it migrates when the water is frozen. It dives to catch fish. It also feeds on freshwater shrimps and aquatic insects. It is a small kingfisher and it has seven subspecies.