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Muscovy Duck Occurence in East TN

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Old Tuesday 15th November 2016, 08:10   #1
UnknownSpecies56
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Muscovy Duck Occurence in East TN

Hey folks,

I have question about the frequency and distribution of muscovy ducks. eBird has them labeled as "Muscovy Duck (Domestic Type)" and listed as a rare species. However, on their website TWRA (TN Wildlife Resource Agency) states that they can be "regularly" found throughout the state. A frequency data map search on eBird shows very few sightings of this bird, but here in TN I've think I've seen them at many different parks. Is the bird commonly seen at parks the same "Muscovy Duck (Domestic Type)" species that eBird is referring to, or is it a mixed, domestic species that people drop off?

Thanks,
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Old Tuesday 15th November 2016, 08:16   #2
UnknownSpecies56
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Here is a picture of the bird I'm talking about that I've frequently seen at various parks. Is this the same "Muscovy Duck (Domestic Type)" that eBird is referring to?

Thanks
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Old Tuesday 15th November 2016, 09:16   #3
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Yep. Escaped from a poultry farm, so not 'tickable', but they presumably want to monitor numbers anyway.
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Old Tuesday 15th November 2016, 16:06   #4
Zheljko
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Quote:
Originally Posted by UnknownSpecies56 View Post
Hey folks,

I have question about the frequency and distribution of muscovy ducks. eBird has them labeled as "Muscovy Duck (Domestic Type)" and listed as a rare species. However, on their website TWRA (TN Wildlife Resource Agency) states that they can be "regularly" found throughout the state. A frequency data map search on eBird shows very few sightings of this bird, but here in TN I've think I've seen them at many different parks. Is the bird commonly seen at parks the same "Muscovy Duck (Domestic Type)" species that eBird is referring to, or is it a mixed, domestic species that people drop off?
Thanks,
Yes, this is "Muscovy Duck (Domestic Type)". Its status as "rare species" depends on your local filter. In our local filter I set purebreed Muscovy-dom.type to 5 birds and hybrid Muscovy x Mallard to 4 birds (which is the number of the largest documented flocks of "continuing" birds). Therefore if someone saw 6 such ducks it would trigger the filter. In real life we have one group of 3 birds and one group of 5 that consistently meet the criteria of not being fenced/caged/enclosured and are regularly reported from eBirders' home patches. If they reproduced I would change the filter to reflect the new flock size. Birders generally do not report them outside of their own home patches, maybe unsure of whether the birds are really feral.
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