Interesting/Little Known introduced populations

After revision, this is what I have concluded:
-Because I have not seen anything about the Eastern Paradise Whydah in Japan beyond a slightly outdated field guide and an old-looking webpage, the species probably no longer exists there.
-eBird only has one Brown Quail record for Fiji, and said record is over twenty years old. Because of this, it is conceivable that the Brown Quail no longer exists there.
-To my understanding, the Great Horned Owl is being eradicated from the Marquesas because of its predation of the Marquesan Kingfisher, if the owl does still exist there. Thibault & Cibois found that the owl was uncommon on the island. Not surprisingly, eBird provides no information about this subject. It is possible that eradication of the owl has been completed.

So, those three introductions, at least, may no longer exist.

 

Here is one that would have ecologically horrific consequences; crab-eating macaques in PNG:
Environmentalists Fear Monkeys Will Destroy New Guinea Forest
https://www.indopacific.org/macaca/
I can't find anything recent about them, so hopefully they've been got rid of.

 

There is a population of Mute Swan in Northam, Western Australia.

 

Does anyone know why the Derbyan Parakeet is listed as a 'sensitive species' for Spain on eBird? Isn't that status supposed to be reserved for endangered native species?

 

It's a sensitive species worldwide. That's a pretty cool introduced population, though.

 

Interesting that even introduced populations of sensitive species remain restricted.

 

Song thrush (3rd paragraph) and European gold finch in melbourne

Introduced birds | BIRDS in BACKYARDS


Although I can’t be really bothered finding an article the now shut down Hazelwood Pondage used to have populations of convict cichlids and a lot of other cockie species too

 

Sooty-headed Bulbul on some islands in New Guinea.
Orange-cheeked Waxbill on Saipan, and possibly also Tinian.

 

Orange-cheeked Waxbill is also in southern California.

 

Rainbow lorikeets from Eastern Australia to Perth.

There is also a small population of wild palm squirrels outside the Perth zoo

 

Bennett's?

 

Hunstein's Mannikin on Pohnpei (island in the Caroline Islands).
According to the Reader's Digest Complete Book of Australian Birds, there was a population of Silver Pheasants in the Porongorup Ranges, Western Australia, that was eradicated in the 1970s.

 

Italian wall lizard in Boston where there are no naturally occurring lizards because it’s too cold.

 

Singapore is interesting in that it has several bird species that are native to elsewhere in Southeast Asia that some people could understandably take to be native to Singapore, but have actually been introduced to there. Examples are the Lineated Barbet, Red Turtle-Dove, and White-Crested Laughingthrush.
Surprisingly, an exception to this is the Common Myna; it is believed that the species colonised Singapore under its own power during the urbanisation of the island, and is therefore considered to be native (but is not protected).

 

Just looking around, I have found this interesting extract from a book regarding introduced populations of primates around the world - I think the book in question is rather old, so a number of the populations may no longer exist. Some examples include:

- Sulawesi crested macaques introduced to Ambon and Maluku in Indonesia (although it is stated they may be native to these islands)
- A colony of Barbary macaques roamed free for some twenty years on an estate in central Germany and maintained their numbers; they were later destroyed for uncertain reasons - either after attacking local children or contracting rabies from a dog
- Attempts to introduce populations of gibbons have been made in at least three locations - on Laulanui, Hawaii; on Hall's Island, Bermuda and on Cayo Santiago Island, Puerto Rico. The Puerto Rico project was abandoned because the gibbons fought with introduced rhesus macaques and attacked human visitors
- Talapoin monkeys were possibly introduced to Bioko (Fernando Poo) and the Canary Islands

However just to confuse matters, some of the 'introductions' in the extract refer to reintroductions such as the golden lion tamarin while others seemingly refer to large and open-range zoo exhibits - I imagine the referenced semi-free-ranging chimpanzee colony at Arnhem was at Apenheul and I believe the crab-eating monkeys at Monkey Jungle in Miami are enclosed as well.

Some of the information in this has also more recently been tested and rejected, such as the status of Central American squirrel monkeys as hybrid remnants of South American species introduced by Amerindian traders (see below):
The Central American squirrel monkey (Saimiri oerstedii): introduced hybrid or endemic species? - PubMed - NCBI

Finally, something of interest I wasn't able to follow up is the reference to the possible survival of truly wild (non-introduced) Barbary macaques in southern Spain until as late as the 1890s. I managed to find that the reference 'Walker, 1992' was 'Walker's Primates of the World' where the same information is mentioned but I couldn't find the four references that accompany it.

I have included the full article below:
http://educypedia.karadimov.info/library/IntroducedMammalsSample.pdf

 

Ring-tailed Coatis exist on the Juan Fernández Islands.