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Could feral chicken take over the Amazon ?
(sh.itjust.works)
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this post was submitted on 02 Nov 2023
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Feral chickens on the island if Kauai have no natural predators, so they are able to thrive in the wild. That is not the same in the rainforest, so I'm guessing no.
shit man, put that chicken in there and only thing you gonna do is make a few big cats, snakes, crocodile, etc happier, also predatory birds, native people, hell even insects, if that chicken never encountered scorpions, they don't have immunity to the sting like others chickens
Yeah, you might be right, but just to feed the debate I'll take the defense of the chicken :
Their sheer number is a big factor : There can be hundreds of thousands in a single farm. Even if tens of thousands die on the first days, the next morning, the survivors will be less fat and more alert.
Red junglefowls are quite adept at living in a rainforest environment despite being nearly flightless and living close to many predators. Their strategy of being diurnal and hiding in the trees at night to avoid mostly nocturnal predators works pretty well and many Amazon predators are nocturnal as well. Mass farm chicken might be too fat at first, but it shouldn't last too long and feral chicken are known to quickly recover their instincts and start brooding in trees.
Tinamus while very far from chicken classification-wise (and closer to ostriches), fill a very similar niche and have a similar lifestyle to jungle fowls, also being very poor flyers. This proves that this type of lifestyle can also work in the Amazon. And with tinamu populations being destabilized by deforestation, and chicken being more adapted to a variety of lifestyles, they could outcompete them and steal their niche.
Just for the scorpion part : Chicken rarely encounrer scorpions due to these being nocturnal. And when they do, it's a pretty even match : The scorpions might poison them, but the feathers make it harder and the chicken might eat the scorpion first. Source
Something that might come up in a commercial farm escape is debeaking. They cut the end off the beak to stop them fighting in crowded conditions and that will decrease their chances to defend themselves in the wild.
That's only a concern for one generation tho, which afaik for commercially bred chickens might be just a matter of weeks
Chicken eggs take 21 days to hatch, so 3 weeks, and then to adult size it probably 6 weeks minimum, so I'd say 2 months minimum they need to survive as a collective.
Wow, I didn't know about that... It's even more troublesome for the hens if it keeps them from feeding of worms and bugs. If part of them survive long enough to breed, this won't be a problem for the next generation... But this is already a big "if".
Would definitely be an issue for hunting. They can eat grain but not peck so would have trouble getting ants or similar fast moving bugs.