il tell you that even with a quad checking 35 cages takes a fecking long time, with no more than 2 cages per mile of water course..
there doing a similar thing here in the cairngorms, they send them all away for dna testing and look at the bitch minks inards to see how many young it has had in the past, one gobsmacking fact (as shooting times readers will know) is that two mink were caught, one on the spey and one on the iythan(sp), litter sisters, 96 km apart