Great stuff. It is interesting that he uses sunflower seeds to draw them in — I would not have thought that would work.
My brother once set a Tin Cat (multiple live catch trap) in his garage. When he checked, there were 2 legs, blood and other mouse bits — and a very happy shrew. The unfortunate mouse had evidently gone into the trap, and the shrew followed and ate it.
Yes I was surprised too. I usually just use sunflower seeds now in my traps and i catch shrews occasionally but I thought it was the general stinkiness of the traps that draws them in, rather than the seeds. In the UK they used to use mealworms for shrews which makes a lot more sense.
PS. When he wrote he mixed sunflower seeds with leaf litter and humus I had to double check that humus is, in fact soil and not a Turkish dip 🙂