Feral ferret in HMB?

I think I saw a ferret on the coastal trail this morning near the Plover sanctuary. A handful of birds were quite unhappy with its presence.

So first, if it wasn’t a ferret, could it be something local and native? If memory serves, it looks a lot like what I’m pulling up on google.

If it was, considering they are an environmental threat, whom should I contact?

cheers,
ckw