Ok I gotta play devils advocate here and stand up for weasels: have any of you seen a weasel kill a chicken? Actually seen it? And I am meaning particularly the North Americans, as in Europe “weasel” can indicate a couple species in the family that are far larger than our native ones.
All our N.A. weasels are tiny, and feed primarily on mice, small birds (finches/chickadees) and whatever other bugs frogs etc they find. All these things are found around chicken coops, which would definitely account for people seeing a weasel, and of course the little guys could also take a bite out of an already dead bird, because meat is meat. Here’s an adult skull, just 4cm long with canine teeth a whopping 3mm - not really suited to delivering a single killing bite through a chicken skull, which is how weasels typically kill. Below is a field mouse, the brown guy is a short tailed weasel in the summer, probably a juvenile, killed by my cat. Beside it are a couple of mature winter weasels (trappers call them ermine but they’re the same species,) and they barely stretch to 30cm. I’d never say it was “impossible” for them to kill a chicken, just unlikely. Other members of the weasel family including mink, fisher and marten might, but they mostly keep to the forest and not urban areas....though again, I wouldn’t say it’s impossible. Anyway, just my 2cents
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I think some people are often confused with the similarities between weasels, minks, and other weasel-like animals in the family Mustelidae, because they DO look so similar to the layman.
Back in December we had an attack on our chicken coop around 3AM, what my husband insisted was a weasel. He’d gotten only a brief glimpse of it at the beginning—when he opened the door, our Pekin drake (I have a mixed flock) literally fell out the door with this “weasel” attached to his neck, until my husband tried removing it from the duck while beating the crap out of it with his Maglite. It did let go of the duck, but then proceeded to run right back into the coop with the rest of my birds.
Once we finally got the situation under control and damage assessed, the Pekin drake had sustained some pretty serious wounds to his neck (he’s still quacking and kicking after I nursed him back to health

), one of my Rouen drakes was killed, and once I could finally see the culprit I was able to identify it as a mink. He was a beautiful animal of a good size (I’d guess at least 16 inches); I wish I’d gotten a picture of him. But when you’re trying to dress yourself while rushing out the door at 3AM in winter....the last thing you consider is a good photo opportunity.
The next day I was discussing the attack with a friend from work whom I’d given some of my hens to a couple months prior. I was describing to her what the animal looked like since I had not gotten a picture, and she says, “oh, a weasel?” I tell her no, my attacker was a mink, trying to explain some of the differences between minks and weasels. She then tells me that she had just recently had an attack on her birds, too, and that it was a weasel. So we’re going back and forth about it (because I’m thinking her culprit was also a mink) verbally comparing size, attack methods, etc., while she’s on her phone, when she finally shows me a picture. Not some picture pulled off Wikipedia or Google but the animal itself, the carcass of which she’d gotten a picture of after her husband had shot it trying to escape. And it
was a weasel!
Indiana has two species of weasels: the long-tailed weasel (M. frenata) and the least weasel (M. nivalis) and her attacker had been the long-tailed weasel. Even though I didn’t have a picture, I could recall the differences of the two from memory. My mink had a good ~5-7 inches on the weasel she had, a stouter, more solid body than her weasel. And of course the coat—minks have a beautiful, silky smooth fur (that’s why they’re hunted for their fur!), darker and thicker than that of a weasel.
From a distance, the two animals would look quite similar. To a layman and not someone with a background in the life sciences and medicine, the two animals might be mistaken as the same animal of different colors. But, while closely related, the two
are different animals.
I have not seen a weasel kill a chicken myself. I have just seen the aftermath of a mink attack. However, a friend of mine
did witness a weasel killing one of her chickens, and she had picture proof of it.
Regards,
Alicia