Have you ever moved? Some animals move too! And if an animal moves from one place to another for weather or food, it’s called migration! ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/SciShow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow SOURCES: http://www.livescience.com/42297-bed-bugs-facts-information.html http://www.pestworld.org/all-things-bed-bugs/bed-bug-facts-statistics/ http://www.bbc.com/earth/story/20150130-origin-of-bed-bugs-revealed http://onlinelibrary.wiley.com/doi/10.1111/mec.13086/abstract;jsessionid=0865450CE1992A40361E1CC4C331F3CF.f03t01 http://www.bbc.com/earth/story/20150130-origin-of-bed-bugs-revealed http://onlinelibrary.wiley.com/doi/10.1111/mec.13086/abstract;jsessionid=0865450CE1992A40361E1CC4C331F3CF.f03t01 http://webcache.googleusercontent.com/search?q=cache:3LCs4Ah22b4J:entsoc.org/PDF/2011/AE-Potter-spring2011.pdf+&cd=6&hl=en&ct=clnk&gl=us http://www.bedbugs.org/the-history-of-bed-bugs/ http://www.animalbehavioronline.com/juvenilehormone.html http://www.bed-bugs-london.co.uk/bed-bug-diapause http://what-when-how.com/insects/diapause-insects/ http://evolution.berkeley.edu/evolibrary/news/100901_bedbugs http://www.panna.org/resources/ddt-story https://www.epa.gov/ingredients-used-pesticide-products/ddt-brief-history-and-status https://www.reference.com/science/ddt-stand-science-e29b7789980db14c http://articles.latimes.com/2011/may/12/news/la-heb-bedbug-disease-20110512 http://www.uphs.upenn.edu/news/news_releases/2014/11/levy/ http://www.bedbugs.org/bed-bug-exterminators/ Images: https://commons.wikimedia.org/wiki/File%3AKM_6149_flocking_geese.jpg https://en.wikipedia.org/wiki/Caribou#/media/File:Caribou.jpg https://commons.wikimedia.org/wiki/File%3ARangifer_tarandus_Map_NA.svg http://web.mit.edu/12.000/www/m2007/teams/adinafb/CARIBOU%20YEAR.jpeg https://commons.wikimedia.org/wiki/File%3ABLM_Summer_Roadtrip-_Wildlife_in_the_National_Petroleum_Reserve-Alaska_(19348249735).jpg https://commons.wikimedia.org/wiki/File%3ACaribou_Herd_and_Isanotski_Peak.jpg https://commons.wikimedia.org/wiki/File%3ACaribou_Calf_(9024877543).jpg https://commons.wikimedia.org/wiki/File%3AHumpback_whale_jumping.jpg https://commons.wikimedia.org/wiki/File%3AHumpback_whale_noaa.jpg https://commons.wikimedia.org/wiki/File%3AArctic_tern_(Sterna_paradisaea)_attacking%2C_Amsterdam_island%2C_Svalbard.jpg https://commons.wikimedia.org/wiki/File%3AKr%C3%ADa_-_Arctic_Tern_-_Sterna_paradisaea_(3636437571).jpg https://commons.wikimedia.org/wiki/File%3AArctic_tern_edited_by_K_Abdelhamid.png https://commons.wikimedia.org/wiki/File%3ASpot_billed_ducks_flying.jpg https://commons.wikimedia.org/wiki/File%3AMigration_Masai_Mara.jpg https://commons.wikimedia.org/wiki/File%3AAnas_platyrhynchos_-flying_-Palo_Alto_Baylands-8.jpg