This video outlines six different species definitions used in biology.
It answers the question: what is a species?

Six different definitions of a species are presented:
(1) The essentialist or typological definition.
(2) The nominalist species concept definition.
(3) The phenetic species concept definition.
(4) The biological species concept definition.
(5) The phylogenetic species concept definition.
(6) The evolutionary species concept definition.

The advantages and disadvantages of each species definition are discussed.

EvolutionExamples website:
[ Ссылка ]

#speces #speciesdefinition #biologicalspeciesdefinition #linnaeus

========academic citations========
Article about hawk hybrids:
[ Ссылка ]
Article about macaque hybrids:
[ Ссылка ]90178-X
Links to the 3 books about speciation:
Species Concepts in Biology ( [ Ссылка ] )
The Species Problem ( [ Ссылка ] )
Species: A History of the Idea ( [ Ссылка ] )

========music and video credits========

All music and video is believed to be in the public domain, available under a CC-0 or CC-by-SA license, or obtained under paid license from audioblocks.com or videoblocks.com.

Sources/credits for music:
From Audioblocks: Onyx

Sources/credits for video:
From Videoblocks: eagle on branch

========image credits========

All non-original images are believed to be in the public domain, available under a CC-0 or CC-by-SA license, or obtained under paid license from storyblocks.com. Additional images used under a "fair use" interpretation

Images from storyblocks.com: polar bear, black bear, wolf, tiger, lion, elephant, gorilla, red visruses.
Images from Piqsels: mallard ducks, fossil dinosaur
Image of peppered moth: branchcollective.org
Image of museum tag: www.flickr.com/photos/10051694@N02/15335813028
Fair use: Red-shouldered hawk (listed as cc by 2.0 at commons.wikimedia.org/wiki/File:Red-shouldered_Hawk_(Buteo_lineatus)_-_Blue_Cypress_Lake,_Florida.jpg), Common black hawk (listed as cc by 4.0 at commons.wikimedia.org/wiki/File:Buteogallus_anthracinus_subtilis.jpg), hawk hybrids ([ Ссылка ]), 3 book covers.

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