Is this a weasel attack?

[FlyAnywayAJ]

Lost all but one duck to a predator attack. The surviving duck has a bite on the back of her head (one penetrating wound) the rest appeared to have head wounds as well. This happened at night and there were no tracks in the snow around the duck house which was locked. Leading me to think the predator burrowed to my ducks. This morning I saw new tracks in the snow and a burrow hole. Picture attached. My best guess is weasel but these tracks are larger than I am used to seeing around. I am in central Ontario.
Any thoughts?

 

[nuthatched]

Mayve a marten .They could look bigger because the snow is melted a little. Sorry for your loss

 

[FlyAnywayAJ]

Thank you. Interesting, I hadn't thought of marten. Do they stay brown in winter or turn white?

 

[Isadora]

Thank you. Interesting, I hadn't thought of marten. Do they stay brown in winter or turn white?

I believe martens remain brown in winter.

 

[Egghead_Jr]

Could also be mink. Heck, even fisher cat. Though fisher tend to attack the belly. That's a pretty big hole and not a weasel. Likely martin or mink which are weasel family but much bigger than ermine which is the larger of the actual weasels and turns white in winter.

 

[New duck mommy 2021]

So sorry for your loss
She will most likely be in shock
I would treat her wounds and bring her into a warm dark small space ti recover
What ever it was will be back
With the deep snow will you be able to do more predator protection ?
Was it able to get in the duck house or the run ?