I mean what species' nests do they lay their eggs in?
Interesting/Little Known introduced populations
- Thread starter birdsandbats
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Dr. Wolverine
Well-Known Member
Sorry for the misunderstanding. Currently there is no confirmation of which species they target, but I would assume native finches or passerines.
There aren't any Pytilia in Japan but there are several other introduced waxbill species, so presumably they have jumped species.
This 2004 paper specifically says the hosts are unknown in Japan: https://www.researchgate.net/publication/232608107_Spread_of_exotic_birds_in_Japan
Budgerigars were a surprising introduced species in Japan for me. Another paper showed maps where Budgies were found breeding over much of Honshu, although noting that they are in small individual populations not an overall continuous one.
That's quite surprising as well.
I don't see any of these populations of whydahs or budgies in eBird though.
Or iNaturalist, which is even more suspicious.
This species is practically cosmopolitan across the tropics at this point. They are very common in Costa Rica.
@Dr. Wolverine Do you have any more info on the whydah or budgie populations in Japan? Have you ever seen either of these yourself?
Dr. Wolverine
Well-Known Member
No, I have never seen these myself, but I got the info from Helm Field Guides, Birds of Japan by Mark Brazil.
Haliaeetus
Well-Known Member
There's a small feral population of Senegal Parrots in Essonne département near Paris (Southern Île-de-France).
Les perruches s'échappentâ?¦ pour nicher en Essonne.
Les perruches s'échappentâ?¦ pour nicher en Essonne.
The Golden Pheasant has been downgraded in the British List from C1 (self-sustaining naturalised population) to C6 (extinct naturalised population) and as with the Lady Amherst's Pheasant it is reasonable to suppose that the species' demise in Britain is a direct consequence of the return of the Goshawk.
Changes to the British List (21 May 2024) - British Ornithologists' Union
Changes to the British List (21 May 2024) - British Ornithologists' Union
In Chimay (Hainaut province, Belgium) there is an introduced herd of possibly Corsican mouflons. 21 were originally bought from France and put in an enclosed area by a hunter in 2019, but they have since escaped into nearby forests and hills, and there are now already over 100. A court case against the hunter is ongoing. It depends on whether they are true Corsican mouflons (which are protected) to decide what can be done with the animals. DNA samples of the Belgian herd will be analyzed, possibly to be later compared to Corsican samples.
https://www.gva.be/cnt/dmf20240609_92031523
C’est l’histoire d’un gars jugé pour importation illégale de mouflons: "Comme ils ne sont restés qu’entre eux, ils sont vraisemblablement consanguins"
https://www.gva.be/cnt/dmf20240609_92031523
C’est l’histoire d’un gars jugé pour importation illégale de mouflons: "Comme ils ne sont restés qu’entre eux, ils sont vraisemblablement consanguins"
Haliaeetus
Well-Known Member
Many Mouflon populations exist in Continental France, even far from the Mediterranean / Mountain regions, for example in Chambord national forest or in the Baie de Somme, in the Central / Northern parts of the country.
All these populations have been released in the 20th century.
Mouflons are indeed widespread in Europe. Hunters´ve released them everywhere.
In Prague city (Krč and Kunratice district) we have one group that managed to learn to use pedestrian crossings with traffic lights when they want to cross more busy roads. The group used to breed a lot so hunters nowadays reduct it towards +-60 individuals each autumn and mouflons are more shy and hard to see.
In Prague city (Krč and Kunratice district) we have one group that managed to learn to use pedestrian crossings with traffic lights when they want to cross more busy roads. The group used to breed a lot so hunters nowadays reduct it towards +-60 individuals each autumn and mouflons are more shy and hard to see.
Survey of Red-necked Wallabies on the Isle of Man shows population likely about 1,000.
Survey shows Isle of Man wild wallaby population likely at 1,000
I wonder if the solution is to simply allow anybody to catch them alive for smaller animal parks and hobby keepers?
Survey shows Isle of Man wild wallaby population likely at 1,000
I wonder if the solution is to simply allow anybody to catch them alive for smaller animal parks and hobby keepers?
Quite an interesting one, I saw a news story last week reporting that there's apparently now an introduced and breeding population that may be as high as 200 common maras in Dubai!
Apparently they first appeared in 2020 and multiple small groups have been breeding in what looks to be a nature reserve/suburban park with artificial lakes on the edge of the city
There's a nice little video at the top of this AP article A desert oasis outside of Dubai draws a new caravan: A family of rodents from Argentina
Apparently they first appeared in 2020 and multiple small groups have been breeding in what looks to be a nature reserve/suburban park with artificial lakes on the edge of the city
There's a nice little video at the top of this AP article A desert oasis outside of Dubai draws a new caravan: A family of rodents from Argentina
The UAE has Gray Crowned Crane, as well.
Interestingly, when you look this up many (most?) of the sightings seem to be at Al Qudra Lakes which is the same place as the Maras.
It doesn't seem as clear with the crowned cranes that they're actually breeding and may only be quite small numbers.
While I haven't been able to find any positive evidence of breeding, I found some anecdotal social media posts but UAE birders who claimed to have seen nests.
EDIT: just found this eBird checklist with an NE breeding code: https://ebird.org/checklist/S172559923
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