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“Countability” of Bar-headed Geese in the Netherlands (1 Viewer)

B

Byronix

Well-known member
Hi all,

Not sure which forum this question fits in, but do European authorities consider Bar-headed Geese “countable” for the Netherlands (i.e. a stable, breeding population) or are they treated as escaped exotics? Trying to decide whether to include the one I saw today in my life list. Thanks!
 
The Dutch Birding Association does not include these as countable species.

If you -like the AOU and most other Europeans including the British- have lower standards (by which I mean: you do count established exotics), the table on page 12 of the following report (in Dutch, with English captions) may give you an idea which exotics have populations in the Netherlands (however small):
https://www.buwa.nl/fileadmin/buwa_...en-vestiging_en_uitbreiding-19apr2013-web.pdf
The only species not in that list is Vinous-throated Parrotbill breeding near Weert in the southeast (it is dealt with later in the report).
 
Nutcracker said:
What about Black Swans? Which countries have established feral populations of them?
Click to expand...
New Zealand!
Look at page 12 in the report I linked to: a stable 60-70 pairs in the Netherlands. The Krammer-Volkerak lake is the place to be.

@Joost: Luckily I have now seen Pheasant in Korea, Kazakhstan and China. Not that hard!
 
Xenospiza said:
New Zealand!
Look at page 12 in the report I linked to: a stable 60-70 pairs in the Netherlands. The Krammer-Volkerak lake is the place to be.
Click to expand...

Thanks! I think NZ count them as 'reintroduced' as they were apparently native before Maori colonisation left them extinct (probably a subspecies, rather than identical).

Seem to recollect there's some other European countries with feral Black Swans, somewhere one wouldn't have expected - does Serbia ring a bell??
 
Xenospiza said:
The Dutch Birding Association does not include these as countable species.

If you -like the AOU and most other Europeans including the British- have lower standards (by which I mean: you do count established exotics), .
Click to expand...

Lower standards than who?


A
 
Nutcracker said:
Thanks! I think NZ count them as 'reintroduced' as they were apparently native before Maori colonisation left them extinct (probably a subspecies, rather than identical).

Seem to recollect there's some other European countries with feral Black Swans, somewhere one wouldn't have expected - does Serbia ring a bell??
Click to expand...

Black Swans in the UK too but not counted


A
 
Nutcracker said:
What about Black Swans? Which countries have established feral populations of them?
Click to expand...

In Gemany Black Swan is countable since it's date of establishment (2004)

Other naturalised (therefore countable) species include:
Swan Goose f. domestica (estab. 2016, only population around Heidelberg)
Bar-headed Goose (estab. 2005)
Snow goose (estab. 2011, population around Neuss)
Canada Goose
Egyptian Goose
Ruddy Shellduck
Mandarin Duck
Pheasant
Feral Pigeon
Alexandrine Parakeet (estab. 2012)
Rose-ringed Parakeet
Yellow-headed Amazon (estab. 2010)

Ural Owl too is countable as a sucessfully reintroduced species
 
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