Evolution of Brood Parasitism in Birds

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For some animals, raising young takes effort. In birds, this involves building nests, incubating eggs and feeding the chicks. Because of this, sometimes it might be better to save themselves from the effort and cheat instead. Avian brood parasitism is a strategy that has evolved independently seven times in around 100 species of birds, and these birds can exploit over 950 host species. So how has it evolved? • Please like, comment and subscribe if you enjoy the video! • All images and videos used herein are 1) in the public domain, 2) used under a Creative Commons license, 3) used with a license, or 4) used under the parameters of Fair Use law. • References: • Krüger O. Evolution of avian brood parasitism and phylogenetic history of brood parasites. In: Avian brood parasitism. Springer, Cham; 2017. p. 43–59. • Krüger O Davies NB. The evolution of cuckoo parasitism: a comparative analysis. Proc Biol Sci 2002;269:375–381. • Krüger O. Cuckoos, cowbirds and hosts: adaptations, trade-offs and constraints. Phil Trans R Soc B 2007;362:1873–1886. • Soler M. Brood parasite-host coevolution in america versus europe: egg rejection in large-sized host species. Ardeola 2016;63:35–48. • Hoover JP Robinson SK. Retaliatory mafia behavior by a parasitic cowbird favors host acceptance of parasitic eggs. Proc Natl Acad Sci U S A 2007;104:4479–4483. • Robert M Sorci G. The evolution of obligate interspecific brood parasitism in birds. Behavioral Ecology 2001;12:128–133. • https://www.mpg.de/10517426/cuckoo-ma.... • Credits: • https://frontiersinzoology.biomedcent... • AttilaMarton1. https://commons.wikimedia.org/wiki/Fi... • Mike McKenzie. https://commons.wikimedia.org/wiki/Fi... • Sudhir Garg. • Eurasian Cuckoo • Dr. Claire Spottiswoode. https://commons.wikimedia.org/wiki/Fi... • Bear golden retriever. https://commons.wikimedia.org/wiki/Fi... • https://pngtree.com/so/letter-x • Paramanu Sarkar. https://commons.wikimedia.org/wiki/Fi... • Julie Falk. https://flic.kr/p/P3JkT • Galawebdesign. https://commons.wikimedia.org/wiki/Fi... • popo.uw23. https://flic.kr/p/6k7nN3 • #evolution #naturalselection #broodparasite #broodparasitism #parasite #nature #biology #evolutionarybiology #science #animals #cuckoo #birds #zoology #commoncuckoo #reedwarbler

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