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When Birds Stopped Flying

PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ↓ More info below ↓ Support us on Patreon!   / eons   Ratites have spread to Africa, Australia, New Zealand, and South America. And there are fossils of Ratites in Europe, Asia, and North America too. That’s a lot of ground to cover for birds that can’t fly. So how did Ratites end up all over the world? Thanks to Ceri Thomas for the Lithornithid reconstruction. Check out more of Ceri's paleoart at   / alphynix   and http://nixillustration.com Thanks as always to Nobu Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/ Produced for PBS Digital Studios. Super special thanks to the following Patreon patrons for helping make Eons possible: Katie Fichtner, Aldo Espinosa Zúñiga, Anthony Callaghan, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Noah offitzer, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan If you'd like to support the channel, head over to   / eons   and pledge for some cool rewards! Want to follow Eons elsewhere on the internet? Facebook -   / eonsshow   Twitter -   / eonsshow   Instagram -   / eonsshow   References: http://www.pnas.org/content/early/201... https://researchcommons.waikato.ac.nz... https://www.sciencedirect.com/science... https://www.sciencedirect.com/science... https://journals.plos.org/plosone/art... https://www.researchgate.net/publicat... https://www.jstor.org/stable/3545707 http://www.pnas.org/content/115/7/1546 https://onlinelibrary.wiley.com/doi/a... https://www.nature.com/articles/natur... https://www.ncbi.nlm.nih.gov/pmc/arti... https://www.sciencedirect.com/science... https://www.ncbi.nlm.nih.gov/pmc/arti... http://science.sciencemag.org/content... https://www.nature.com/articles/natur... https://academic.oup.com/biolinnean/a... http://digitallibrary.amnh.org/handle... https://onlinelibrary.wiley.com/doi/a... http://science.sciencemag.org/content... http://rspb.royalsocietypublishing.or... https://digital.library.adelaide.edu.... http://www.pnas.org/content/110/42/16910 https://dspace.flinders.edu.au/xmlui/... https://www.ncbi.nlm.nih.gov/pubmed/2... https://www.tandfonline.com/doi/full/... https://www.notornis.osnz.org.nz/note... https://www.jstor.org/stable/2462941 https://onlinelibrary.wiley.com/doi/a...