Species Concepts in Recent Research - How Scientists Discovered 3 New Species of Giraffe! 

Should giraffes be considered 1 species or 4 different species? What is a species, anyway? In this video, Jayme Dyer explains what a species is and three different methods scientists use to designate species: the Biological Species Concept, the Morphological Species Concept, and the Phylogenetic Species Concept.
0:00 Introduction
0:34 Definition of a Species
1:16 Biological Species Concept
1:49 Morphological Species Concept
2:20 Phylogenetic Species Concept
3:14 Why species designation matters
The scientific article about giraffes discussed in this video is:
R. T. F. Coimbra, et al., Whole-genome analysis of giraffe supports four distinct species. Current Biology 31, 2929-2938.e5 (2021). CC BY-NC-ND 4.0 doi.org/10.1016/j.cub.2021.04...
Image credits:
Giraffe photos adapted from R. T. F. Coimbra, et al. (2021)
Cane Toad photos by Amada44 CC-BY 2.0 and brian.gratwicke CC-BY 2.0
Mating cane toad photos by Katja Schulz CC-BY 2.0
Common Toad photo by Armin Kübelbeck CC-BY SA 3.0
Red wolf photos by R. Nordsven/USFWS CC-BY 2.0, USFWS/B. Bartel CC-BY 2.0, & Cliff Johnson CC-BY-SA 2.0
Coyote photos by Lorie Shaull CC-BY SA 2.0, Don Owens CC-BY 2.0, Allan Hack CC-BY SA 2.0, & Larry Lamsa CC-BY 2.0
Tyrannosaurus skull drawings by Danny Cicchetti CC-BY SA 3.0
Peacock photo by ToastyKen CC-BY 3.0
Monarch butterfly by Captain-tucker CC-BY SA 3.0
Monarch caterpillar by Derek Ramsey GNU Free Documentation License 1.2
Grove snail photo by Angus Davison CC-BY SA 4.0
T rex by Zissoudisctrucker CC BY-SA 4.0
Elephant by Muhammad Mahdi Karim GFDL 1.2
Lion by Rufus46 CC BY-SA 3.0
Eagle by Vtornet CC BY-SA 3.0
Squid by Hans Hillewaert CC BY-SA 4.0
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