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   » » Wiki: Booby
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A booby is a in the Sula, part of the family . Boobies are closely related to the ( Morus), which were formerly included in Sula.


Systematics and evolution
The genus Sula was introduced by the French zoologist Mathurin Jacques Brisson in 1760. The is the . The name is derived from sĂșla, the and Icelandic word for the other member of the family , the .

The English name booby may derive from the 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. Owing to this, boobies are often mentioned as having been caught and eaten by shipwrecked sailors, including of the and his adherents during their voyage after being set adrift by Fletcher Christian and his followers.

(2004). 9780142004692, Penguin Books. .

Six of the ten extant Sulidae species called boobies are in the genus Sula, while the three gannet species are usually placed in the genus . Abbott's booby was formerly included in Sula but is now placed in a genus Papasula, which represents an ancient lineage perhaps closer to Morus. Some authorities consider that all ten species should be considered in Sula. However, they are readily distinguished by means of . The distinct lineages of gannets and boobies are known to have existed in such form, since at least the Middle ().

The fossil record of boobies is not as well documented as that of , either because booby speciation was lower from the late to the (when gannet diversity was at its highest), or because the booby fossil species record is as yet incomplete due to most localities being equatorial or in the Southern Hemisphere.


Behaviour
Boobies hunt fish by diving from a height into the sea and pursuing their prey underwater. Facial air sacs under their skin cushion the impact with the water. Boobies are colonial breeders on islands and coasts. They normally lay one or more chalky-blue eggs on the ground or sometimes in a tree nest. Selective pressures, likely through competition for resource, have shaped the ecomorphology and foraging behaviours of the six species of boobies in the Pacific.


List of species

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