Interesting/Little Known introduced populations

birdsandbats said:
According to this article:

"In accordance with the German Federal Nature Conservation Act, a new species that survives and breeds successfully in the wild for several generations is considered native. As such, it’s awarded the same protections as any other native species, like the White Stork or gray wolf, making it illegal to catch, hunt, or kill rheas, or to damage or alter their habitat."

And I thought the EU had some dumb invasive species laws.
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:rolleyes:
 
I have just got the new Lynx field guide for Birds of Malaysia. A very surprising introduced species of which I was entirely unaware is the Hadada Ibis (from Africa), which is described as a "locally common resident" found in "urban parks, chiefly around Kuala Lumpur, but recently recorded also in Perak."

Another introduced species which I think was new to me, is Vernal Hanging Parrot in Singapore.
 
Regarding the Hadada Ibises, I found a few online articles, e.g. from 2018:
Hadada Ibis – Bird Ecology Study Group

"These Hadada Ibises were brought in as part of bird parks in Klang Valley. But since at least 2007 found in public gardens (escapees) in the KL/Klang Valley area. Since 2017, a few (5 birds) have found their way up north to Ipoh (200 km). Not sure why as they are described as not migratory and tend to be localised (in Africa). They are not from the Taiping Zoo (70 km north as far as we can tell).

Almost all our sightings in Ipoh have been at Chiu Sein Chiong’s (good local bird watcher) home which is facing a large golf course with many overgrown trees and near a river. At least 11 sighting since late 2017."
 
Red cherry shrimps Neocaridina denticulata have been found to have a well-established and self-sustaining population in Hungary. Their population is mainly centered on a natural thermal pond but they also occur in a neighbouring non-thermal stream - they seem able to survive the winter even in the stream. All of the studied fish species in the stream environment (native gudgeon, common roach and European chub and non-native pumpkinseed and stone moroko) were found to have fed on red cherry shrimps.

As well as in Hungary, populations of red cherry shrimp are known from thermally polluted waters in Germany and Poland.

More information can be found in the scientific paper below:
Occurrence of non-native red cherry shrimp in European temperate waterbodies: a case study from Hungary | Knowledge and Management of Aquatic Ecosystems
 
I have just seen this paper from 2013 that describes a small but growing number (including reproduction) of Vietnamese potbelly pigs living wild in Spain. The animals are the result of both deliberate and accidental releases of pets. Several potential cases of hybridisation with wild boar had already been reported.

The paper is included below (I think it may need to be copy-pasted into the searchbar; it doesn't seem to want to hyperlink):
file:///C:/Users/Owner/Downloads/272211-Text%20de%20l'article-371552-1-10-20140121.pdf
 
Just seen this paper about an interesting case - dusky langurs have recently been observed in Singapore. Although the researchers consider it likely that the three langurs arrived under their own steam, either by walking across the Johor-Singapore Causeway or by swimming across the Johor Strait from Malaysia, they still refer to the dusky langurs as non-native and have concerns about the impact of the dusky langurs on native Raffle's banded langurs. If the dusky langurs are found to be having a negative impact on the banded langurs, they may be relocated back to the mainland.

The paper is included here:
file:///C:/Users/Owner/Downloads/5818-Full%20article%20text%20with%20author%20details-31525-1-10-20200626.pdf
 
carl the birder said:
the reideer on south georiga. i think it is weird that ther are so far from were they nornmely live. and they live ther. also did you now that in 1936 nine king penguins was released in norwey it did not go well and they did try that for africkan and macaroni penguins with the same result
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Article about the introduction of penguins in Norway :

The Last Arctic King Penguin
 
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