Since we have been here, we have been visited by one adult and two juvenile coypu. At one stage the “mother” had both her young in our pond. Later they, the young, visited unaccompanied and let me get within ten metres to take photographs.
Prior to that we found that our pond had a leak. Investigation suggested it was caused by a coypu burrow in “plug hole corner”. We filled this burrow with clumping clay cat-litter stuffed into compostable polyester bags. When the polyester breaks down via ester linkage hydrolysis water got into the bags causing the clay to absorb the water, expand and tightly fill the burrow. It was a neat idea of mine that worked well.
Bowie is now using the residual litter supply.
I have seen a grown up coypu this calendar year behind the greenhouse and swimming in the pond.
Once we had seen the juveniles, I checked and there is a prefectural edict saying that they need, as an invasive species, to be curtailed. We told the Mairie, and the hunters came and set traps. They caught a rare Eurasian mink which had to be released. Then one day I saw the coypu pair again. We called the hunters and they shot one of them with a shotgun. They could not see the other one. It made an appearance after they had left.
When the lotuses get going the coypu likes to uproot them and eat the roots. This causes them to spread but ruins the display. Naughty coypu!!
Last night the wife called me, she had seen what looked like a dead coypu in the pond. We went over to investigate. The pond walls are lined with a wire fence designed to stop things like coypu burrowing into the pond walls. The holes in the fence are ~10cm square. When I lifted up the fence with a garden rake, there was indeed a dead, presumably drowned coypu stuck fast in one of the holes below the water line. It looked like it had entered the pond behind the fence and then tried to swim through the hole in the fence. It got stuck and instead of backing out of the “trap” it had put one of its front paws through the hole. So not only was its head and neck through the hole, in trying to escape by using its paw, it had made the matter worse for itself. Without the paw it might have been able to back out.
Together we lifted the fence out of the water and cut a portion of it free. It, the rodent, was very heavy ~3kg and the coypu was bigger than the juveniles. It had a very long tail. I cut it free of the wire hole and then took it for a water burial on a shovel.
When the fur is dry the animal looks bigger. So, it could have been the adult. We are on watch for coypu sign {turds}.
We shall see. The coypu made its own trap and could not back out of it.
Of late we have new mole-sign!! This mole must be trained by Karla at Moscow Central. Because there has been no mole sign for a number of weeks. This one must be a very deep mole. But now it has left two mountains {mole hills}. These now have some mole traps. Again, we wait.
If there is no new mole sign,I will check the taps early next week. If there is more mole sign, I will set more traps.
We are on the lookout for coypu turds {this language may be offensive to your reader} and mole hills…
Life is a riot out here …

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