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Collared kingfisher
(Sả khoang cổ, Todiramphus chloris)

Collared kingfisher(Sả khoang cổ, Todiramphus chloris), also white-collared kingfisher, black-masked kingfisher or mangrove kingfisher.
The collared kingfisher (Todiramphus chloris) is a medium-sized kingfisher belonging to the subfamily Halcyoninae, the tree kingfishers.

Alcedo, Alcedinidae: Latin word for kingfisher. 
Halcyon: a name for a bird in Greek mythology generally associated with the kingfisher. 

Todiramphus is a genus of kingfishers in the subfamily Halcyoninae that are endemic to the Philippines, New Guinea, Australia, New Zealand and many islands in the South Pacific.

1/ Collared kingfisher(Sả khoang cổ, Todiramphus chloris), also white-collared kingfisher, black-masked kingfisher or mangrove kingfisher 

Alcedo, Alcedinidae: Latin word for kingfisher. 
The genus name Todiramphus literally means "tody-bill"; tody is a relative of the kingfishers with a similar slender long bill, and the Greek rhamphos (ῥάµϕος) means "beak" or "bill".