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Remember how we mentioned that Blu was the last male blue macaw? Yeah, nature simply does not like that. Even if there's more than one female, every new macaw from then on will still be a descendant of the same guy, which will be devastating for their genes. Inbreeding causes serious health problems in the population and has caused species to go extinct in the past -- some types of felines, for example, essentially bred themselves into dead ends. In other words, all that boning was for nothing.

In reality, there are somewhere around 80 blue macaws in the world, and even that appears to be way too few to save them. Most are related to each other, leading to all the problems mentioned above -- so when Presley was discovered in 2002 and found to be genetically diverse, scientists were hopeful that he could help mix up those genes a little. However, Presley's first batch of eggs turned out to be infertile, so his partner was taken away from him and no further attempts to mate him were made.

Via Digischool.nl

Scientists make the worst wingmen.

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If the scientist in Rio had mentioned that by "saving the species" he meant "producing a few more generations of sick, genetically doomed birds," Blu's owner probably wouldn't have bothered. Sadly, this also means "Let's repopulate the species" is no longer a valid come-on in apocalyptic situation (sorry, everyone).

For more reasons children's movies should come with R ratings, check out 6 Classic Kids Shows Secretly Set in Nightmarish Universes and 9 Traumatizing Moments from Classic Kids Movies.

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