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Brown booby (Chim điên bụng trắng, Sula leucogaster)

The brown booby (Sula leucogaster) is a large seabird in the booby and gannet family Sulidae.
This species breeds on islands and coasts of the Atlantic, Indian and Pacific oceans.

The English name "booby" was possibly based on the Spanish slang term bobo, meaning "stupid", as these tame birds had a habit of landing on board sailing ships, where they were easily captured and eaten.

Suliformes, Sulidae, or Sula is derived from the Old Norse word sūla, which refers to a gannet or a pillar.

The specific leucogaster is from Ancient Greek leuko for "white" and gastēr for "belly".

Masked booby (Chim điên mặt xanh, Sula dactylatra), also called the masked gannet or the blue-faced booby

The masked booby (Sula dactylatra), also called the masked gannet or the blue-faced booby, is a large seabird of the booby and gannet family, Sulidae.

The English name "booby" was possibly based on the Spanish slang term bobo, meaning "stupid", as these tame birds had a habit of landing on board sailing ships, where they were easily captured and eaten.

Suliformes, Sulidae, or Sula is derived from the Old Norse word sūla, which refers to a gannet or a pillar.

The specific epithet combines the Ancient Greek δάκτυλος (dáktul), meaning 'finger', and the Latin ater, meaning 'black'. "Black fingers" refers to the splayed wingtips in flight.

Red-footed booby (Chim điên chân đỏ, Sula sula)

The red-footed booby (Sula sula) is a large seabird of the booby family, Sulidae.
This species is found widely in the tropics of the Atlantic, Pacific, and Indian Oceans. 
The bird breeds colonially in coastal regions.

The English name "booby" was possibly based on the Spanish slang term bobo, meaning "stupid", as these tame birds had a habit of landing on board sailing ships, where they were easily captured and eaten.

Suliformes, Sulidae, or Sula is derived from the Old Norse word sūla, which refers to a gannet or a pillar.

A booby is a seabird in the genus Sula, part of the family Sulidae. Boobies are closely related to the gannets (Morus), which were formerly included in Sula.
The English name "booby" was possibly based on the Spanish slang term bobo, meaning "stupid", as these tame birds had a habit of landing on board sailing ships, where they were easily captured and eaten.

1/ Brown booby (Chim điên bụng trắng, Sula leucogaster)
2/ Red-footed booby (Chim điên chân đỏ, Sula sula)
3/ Masked booby (Chim điên mặt xanh, Sula dactylatra), also called the masked gannet or the blue-faced booby