Quote:
" Domestic mink, which are bred in fur farms, are different from wild mink. Domestic mink are found to have 19.6 percent smaller brains, 8.1 percent smaller hearts, and 28.2 percent smaller spleens than wild mink do (Kruska and Schreiber 1999; Kurska 1996).
Domestic mink are larger than wild mink, which may cause problems with the ecosystem when they escape. Mink are solitary, territorial animals and are intolerant of other mink. In times of overpopulation, mink control their own numbers by either killing each other through direct conflict or by causing weaker mink to be driven from territory until starvation sets in (Dunstone 1993). When hundreds or thousands of released domestic mink flood an ecosystem, it causes a great disturbance for the wild mink. This disturbance causes the deaths of the majority of the released mink and many of the wild mink. Most of the released and wild mink in the area die slow deaths, due to starvation, or from injuries from the unnaturally high number of mink fighting for a territory (Dunstone 1993). When a domestic mink survives long enough to reproduce, it may cause problems for the wild mink populations (Bowman et al. 2007). The adding of weaker domestic mink genes into wild mink populations, is believed by some, to have contributed to the decline of mink populations in Canada (Bowman et al. 2007)."
Sorry, I know it was windy, but from OP description of the neighbor's mink, they are of the domestic variety.
I do totally agree that talking to your neighbors is the best approach, rather than some of the heavier handed methods. They will hopefully handle the situation with maturity. It's really for their own sake that you speak with them, if you are having issues others probably are as well and may not start off with just a conversation, it's best they hear it from you first. Also, there could be legal consequences for their domestic mink escaping into the wild, I'm not sure. Either way, I'm sure it's best they hear it from the place of compassion that you are clearly showing.