Interesting/Little Known introduced populations

FBBird said:
I photographed a male in the New Forest this summer. Interesting that none of these records refer to hen Reeves'.
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Lever also notes that, because the males disperse widely and are fairly quiet by pheasant standards, they have a hard time pairing up when populations are as sparse as the British ones, so the chances are that if you see a cock bird there won't be a hen anywhere near it. I also suspect that, given that they are generally released to provide additional interest for shoots, the unshowy females will be of less commercial value and so it may be that cocks outnumber hens in any case.
 
The Smooth-billed Ani on the Galapagos Islands is apparently the only introduced population of a species of cuckoo in existence. The Ani was introduced to the islands for the purpose of controlling cattle ticks, but it became a devastating pest there. It eats the chicks of Darwin's finches, among other valued organisms.
 
DesertRhino150 said:
Does anyone know the provenance of the Steller sea lion that was living on the coast of Cornwall until around 1996? Was it an escapee from captivity or a genuine vagrant from the Pacific?
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It would have been dismissed as having been an escapee. Harris & Yalden's Mammals of the British Isles (4th edition, 2008) is a comprehensive handbook and covers five species of vagrant pinniped; the Steller Sea Lion is not mentioned at all.
 
Cassidy Casuar said:
It would have been dismissed as having been an escapee. Harris & Yalden's Mammals of the British Isles (4th edition, 2008) is a comprehensive handbook and covers five species of vagrant pinniped; the Steller Sea Lion is not mentioned at all.
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I'm curious, what are the five vagrant pinnipeds?

In general animals from the north Pacific don't seem to end up in the north Atlantic much, even seabirds. Especially for an animal that would have to swim, that's a long stretch to cover during the short time when the ice is low. That said, I suppose it's possible, though certainly very rare and unlikely.
 
In Thailand there seem to be a growing number of wild arapaima's. They were brought in for the aquarium-fish trade and for large fishing ponds in which sport fishing couod be done. It looks however that a growing number escaped and / or were releasd in the wild were they can become a real danger for the local fish populations :(.
 
This one is somewhat well-known, but Singapore has a feral Stork population that consists entirely of hybrids between the Milky Stork and Painted Stork.
 
Great Argus said:
I'm curious, what are the five vagrant pinnipeds?

In general animals from the north Pacific don't seem to end up in the north Atlantic much, even seabirds. Especially for an animal that would have to swim, that's a long stretch to cover during the short time when the ice is low. That said, I suppose it's possible, though certainly very rare and unlikely.
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I'm not saying the Stellar's Sea Lion swam to England on its own, but there is at least one Gray Whale that took the Northwest Passage during a low ice year and wound up in the eastern Atlantic. There have been sightings off the coasts of Israel and Namibia. Gray Whales have a fairly comparable distribution to Stellar's Sea Lions.
 
i am curently on maurtius outside of madagaskar
yestur day i found a introducst specis i dident now exited. i was staniding at a pond loking for birds
wen all of a suden a softshell turtel came swiming. loking online i found out that it is a wattle necked softshell turtle Palea steindachneri .ther is however wery litel info about it on mauritus
 
A while ago, I noticed this old eBird report of five Blue-headed Parrots on Oahu, which is accompanied by a weirdly-worded comment:
Likely this species of smallish Pionus but not well viewed, leaving roost palm in resort parking lot and flying east over golf course, bluish head observed. I would suggest that by filtering this species completely out of ebird on Oahu, any opportunity to document the spread, demise or persistence of this bird is lost.
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They were much more likely to have been Blue-crowned Parakeets, anyway. There are several eBird reports of Blue-crowned Parakeets being seen in the area in which this sighting took place.
 
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Flamingos in Zwillbrocker Venn, Germany.
If I understood everything right here is some information:
1982 six Chilean flamingos appeared at the lake.
1987 five Greater flamingos appeared at the lake.
1994 could at least one American flamingo be seen at the lake.
2006, the first Lesser flamingo was seen there and they can apparently be seen now and then still, but they do not seem to stay at the area permanently like the other species.

The population seems to be a mix between all the 3 first species today.
 
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