Japanese Field Mouse Camouflages the Nest Entrance with Leaf Litter on the Forest Floor

I was lucky enough to find a hidden entrance of a burrow of nocturnal field mouse [either Large Japanese field mouse (Apodemus speciosus, family Muridae) or Small Japanese field mouse (Apodemus argenteus, family Muridae)] in the windbreaker forest of Japanese red-cedar (Cryptomeria japonica, family Cupressaceae) around the farmland.  Interestingly, the Japanese field mouse sometimes picked up fallen leaves of broad-leafed deciduous trees around the entrance and tried to cover up the nest entrance with the leaf litter (camouflage).  You can see the mouse coming in and out of the hidden entrance repeatedly after foraging trips.  Captured nightly with my old trailcam of mid- and late-October 2023 in Japan.

For a full story (text in Japanese);
https://sigma-nature-vlog.blogspot.co...

0:00   20 Oct
1:34   21 Oct
1:56   22 Oct
4:51   23 Oct
7:42   24 Oct
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10:07   26 Oct
10:22   27 Oct

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